diff --git a/.gitignore b/.gitignore
index d1593c8..2d6b549 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-tools/vendor/*
-composer.lock
+tools/vendor/*
\ No newline at end of file
diff --git a/README.mkd b/README.mkd
index a342188..988edc1 100644
--- a/README.mkd
+++ b/README.mkd
@@ -118,6 +118,12 @@ If you have files that you're not tracking in your repository but that you'd sti
 
 And git-deploy will automatically upload those files for you. This is super useful for things like Composer, which recommends that you don't track the vendor folder in your git repo. This way, you can have git-deploy upload the entire vendor folder to the server, and you won't need Composer installed on it.
 
+### Deploy only if the repository is in sync with the remote
+
+If the repository is maintained by more than a person and you are afraid someone makes a deploy when its local repository is not aligned with the remote, you can make git-deploy-php block the operation when this case occurs. To configure this behaviour, simply add to your .ini file the following:
+
+    check_sync_with_remote = true
+
 ### Enable maintenance mode on your website for the duration of the deployment
 
 If you want to take your website down with an "under maintenance" page to prevent users from seeing errors during the middle of a deployment, you can ask git-deploy to automatically turn maintenance mode on prior to deploying, and off at the end of the deployment.
diff --git a/composer.json b/composer.json
index 73afc88..65a67de 100644
--- a/composer.json
+++ b/composer.json
@@ -55,14 +55,29 @@
     "bin": [
         "git-deploy"
     ],
-    "require": {
-        "phpseclib/phpseclib": "^2.0",
-        "league/climate": "^3.2"
+    "autoload": {
+        "psr-4": {
+            "Brunodebarros\\Gitdeploy\\": "tools/src/"
+        }
     },
     "require-dev": {
+        "phpseclib/phpseclib": "^2.0",
+        "league/climate": "^3.2",
+        "league/flysystem": "^1.0",
         "phpunit/phpunit": "^5.1"
     },
     "config": {
-        "vendor-dir": "tools/vendor"
+        "vendor-dir": "tools/vendor",
+        "preferred-install": "dist",
+        "sort-packages": true,
+        "optimize-autoloader": false
+    },
+    "scripts": {
+        "post-autoload-dump": [
+            "php tools/build.php"
+        ]
+    },
+    "require": {
+        "ext-ftp": "*"
     }
-}
\ No newline at end of file
+}
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..3a703a0
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,1608 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "2ffd3275bc743ef99705b4c1281fde54",
+    "packages": [],
+    "packages-dev": [
+        {
+            "name": "doctrine/instantiator",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/instantiator.git",
+                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/instantiator/zipball/185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
+                "reference": "185b8868aa9bf7159f5f953ed5afb2d7fcdc3bda",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1"
+            },
+            "require-dev": {
+                "athletic/athletic": "~0.1.8",
+                "ext-pdo": "*",
+                "ext-phar": "*",
+                "phpunit/phpunit": "^6.2.3",
+                "squizlabs/php_codesniffer": "^3.0.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Doctrine\\Instantiator\\": "src/Doctrine/Instantiator/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Marco Pivetta",
+                    "email": "ocramius@gmail.com",
+                    "homepage": "http://ocramius.github.com/"
+                }
+            ],
+            "description": "A small, lightweight utility to instantiate objects in PHP without invoking their constructors",
+            "homepage": "https://github.com/doctrine/instantiator",
+            "keywords": [
+                "constructor",
+                "instantiate"
+            ],
+            "time": "2017-07-22T11:58:36+00:00"
+        },
+        {
+            "name": "league/climate",
+            "version": "3.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/thephpleague/climate.git",
+                "reference": "b103fc8faa3780c802cc507d5f0ff534ecc94fb5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/thephpleague/climate/zipball/b103fc8faa3780c802cc507d5f0ff534ecc94fb5",
+                "reference": "b103fc8faa3780c802cc507d5f0ff534ecc94fb5",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.4.0",
+                "seld/cli-prompt": "~1.0"
+            },
+            "require-dev": {
+                "mikey179/vfsstream": "~1.4",
+                "mockery/mockery": "~0.9",
+                "phpunit/phpunit": "~4.6"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "League\\CLImate\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Joe Tannenbaum",
+                    "email": "hey@joe.codes",
+                    "homepage": "http://joe.codes/",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP's best friend for the terminal. CLImate allows you to easily output colored text, special formats, and more.",
+            "keywords": [
+                "cli",
+                "colors",
+                "command",
+                "php",
+                "terminal"
+            ],
+            "time": "2016-04-04T20:24:59+00:00"
+        },
+        {
+            "name": "league/flysystem",
+            "version": "1.0.41",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/thephpleague/flysystem.git",
+                "reference": "f400aa98912c561ba625ea4065031b7a41e5a155"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/f400aa98912c561ba625ea4065031b7a41e5a155",
+                "reference": "f400aa98912c561ba625ea4065031b7a41e5a155",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.9"
+            },
+            "conflict": {
+                "league/flysystem-sftp": "<1.0.6"
+            },
+            "require-dev": {
+                "ext-fileinfo": "*",
+                "mockery/mockery": "~0.9",
+                "phpspec/phpspec": "^2.2",
+                "phpunit/phpunit": "~4.8"
+            },
+            "suggest": {
+                "ext-fileinfo": "Required for MimeType",
+                "league/flysystem-aws-s3-v2": "Allows you to use S3 storage with AWS SDK v2",
+                "league/flysystem-aws-s3-v3": "Allows you to use S3 storage with AWS SDK v3",
+                "league/flysystem-azure": "Allows you to use Windows Azure Blob storage",
+                "league/flysystem-cached-adapter": "Flysystem adapter decorator for metadata caching",
+                "league/flysystem-eventable-filesystem": "Allows you to use EventableFilesystem",
+                "league/flysystem-rackspace": "Allows you to use Rackspace Cloud Files",
+                "league/flysystem-sftp": "Allows you to use SFTP server storage via phpseclib",
+                "league/flysystem-webdav": "Allows you to use WebDAV storage",
+                "league/flysystem-ziparchive": "Allows you to use ZipArchive adapter",
+                "spatie/flysystem-dropbox": "Allows you to use Dropbox storage",
+                "srmklive/flysystem-dropbox-v2": "Allows you to use Dropbox storage for PHP 5 applications"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "League\\Flysystem\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Frank de Jonge",
+                    "email": "info@frenky.net"
+                }
+            ],
+            "description": "Filesystem abstraction: Many filesystems, one API.",
+            "keywords": [
+                "Cloud Files",
+                "WebDAV",
+                "abstraction",
+                "aws",
+                "cloud",
+                "copy.com",
+                "dropbox",
+                "file systems",
+                "files",
+                "filesystem",
+                "filesystems",
+                "ftp",
+                "rackspace",
+                "remote",
+                "s3",
+                "sftp",
+                "storage"
+            ],
+            "time": "2017-08-06T17:41:04+00:00"
+        },
+        {
+            "name": "myclabs/deep-copy",
+            "version": "1.7.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/myclabs/DeepCopy.git",
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/myclabs/DeepCopy/zipball/3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
+                "reference": "3b8a3a99ba1f6a3952ac2747d989303cbd6b7a3e",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.6 || ^7.0"
+            },
+            "require-dev": {
+                "doctrine/collections": "^1.0",
+                "doctrine/common": "^2.6",
+                "phpunit/phpunit": "^4.1"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "DeepCopy\\": "src/DeepCopy/"
+                },
+                "files": [
+                    "src/DeepCopy/deep_copy.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "Create deep copies (clones) of your objects",
+            "keywords": [
+                "clone",
+                "copy",
+                "duplicate",
+                "object",
+                "object graph"
+            ],
+            "time": "2017-10-19T19:58:43+00:00"
+        },
+        {
+            "name": "phpdocumentor/reflection-common",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
+                "reference": "21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionCommon/zipball/21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6",
+                "reference": "21bdeb5f65d7ebf9f43b1b25d404f87deab5bfb6",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.6"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
+                        "src"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jaap van Otterdijk",
+                    "email": "opensource@ijaap.nl"
+                }
+            ],
+            "description": "Common reflection classes used by phpdocumentor to reflect the code structure",
+            "homepage": "http://www.phpdoc.org",
+            "keywords": [
+                "FQSEN",
+                "phpDocumentor",
+                "phpdoc",
+                "reflection",
+                "static analysis"
+            ],
+            "time": "2017-09-11T18:02:19+00:00"
+        },
+        {
+            "name": "phpdocumentor/reflection-docblock",
+            "version": "4.1.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/ReflectionDocBlock.git",
+                "reference": "2d3d238c433cf69caeb4842e97a3223a116f94b2"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/ReflectionDocBlock/zipball/2d3d238c433cf69caeb4842e97a3223a116f94b2",
+                "reference": "2d3d238c433cf69caeb4842e97a3223a116f94b2",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.0",
+                "phpdocumentor/reflection-common": "^1.0@dev",
+                "phpdocumentor/type-resolver": "^0.4.0",
+                "webmozart/assert": "^1.0"
+            },
+            "require-dev": {
+                "mockery/mockery": "^0.9.4",
+                "phpunit/phpunit": "^4.4"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "me@mikevanriel.com"
+                }
+            ],
+            "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
+            "time": "2017-08-30T18:51:59+00:00"
+        },
+        {
+            "name": "phpdocumentor/type-resolver",
+            "version": "0.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpDocumentor/TypeResolver.git",
+                "reference": "9c977708995954784726e25d0cd1dddf4e65b0f7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpDocumentor/TypeResolver/zipball/9c977708995954784726e25d0cd1dddf4e65b0f7",
+                "reference": "9c977708995954784726e25d0cd1dddf4e65b0f7",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.5 || ^7.0",
+                "phpdocumentor/reflection-common": "^1.0"
+            },
+            "require-dev": {
+                "mockery/mockery": "^0.9.4",
+                "phpunit/phpunit": "^5.2||^4.8.24"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "phpDocumentor\\Reflection\\": [
+                        "src/"
+                    ]
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Mike van Riel",
+                    "email": "me@mikevanriel.com"
+                }
+            ],
+            "time": "2017-07-14T14:27:02+00:00"
+        },
+        {
+            "name": "phpseclib/phpseclib",
+            "version": "2.0.7",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpseclib/phpseclib.git",
+                "reference": "f4b6a522dfa1fd1e477c9cfe5909d5b31f098c0b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/f4b6a522dfa1fd1e477c9cfe5909d5b31f098c0b",
+                "reference": "f4b6a522dfa1fd1e477c9cfe5909d5b31f098c0b",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phing/phing": "~2.7",
+                "phpunit/phpunit": "~4.0",
+                "sami/sami": "~2.0",
+                "squizlabs/php_codesniffer": "~2.0"
+            },
+            "suggest": {
+                "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
+                "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+                "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "phpseclib/bootstrap.php"
+                ],
+                "psr-4": {
+                    "phpseclib\\": "phpseclib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jim Wigginton",
+                    "email": "terrafrost@php.net",
+                    "role": "Lead Developer"
+                },
+                {
+                    "name": "Patrick Monnerat",
+                    "email": "pm@datasphere.ch",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Andreas Fischer",
+                    "email": "bantu@phpbb.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Hans-Jürgen Petrich",
+                    "email": "petrich@tronic-media.com",
+                    "role": "Developer"
+                },
+                {
+                    "name": "Graham Campbell",
+                    "email": "graham@alt-three.com",
+                    "role": "Developer"
+                }
+            ],
+            "description": "PHP Secure Communications Library - Pure-PHP implementations of RSA, AES, SSH2, SFTP, X.509 etc.",
+            "homepage": "http://phpseclib.sourceforge.net",
+            "keywords": [
+                "BigInteger",
+                "aes",
+                "asn.1",
+                "asn1",
+                "blowfish",
+                "crypto",
+                "cryptography",
+                "encryption",
+                "rsa",
+                "security",
+                "sftp",
+                "signature",
+                "signing",
+                "ssh",
+                "twofish",
+                "x.509",
+                "x509"
+            ],
+            "time": "2017-10-23T05:04:54+00:00"
+        },
+        {
+            "name": "phpspec/prophecy",
+            "version": "v1.7.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpspec/prophecy.git",
+                "reference": "c9b8c6088acd19d769d4cc0ffa60a9fe34344bd6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpspec/prophecy/zipball/c9b8c6088acd19d769d4cc0ffa60a9fe34344bd6",
+                "reference": "c9b8c6088acd19d769d4cc0ffa60a9fe34344bd6",
+                "shasum": ""
+            },
+            "require": {
+                "doctrine/instantiator": "^1.0.2",
+                "php": "^5.3|^7.0",
+                "phpdocumentor/reflection-docblock": "^2.0|^3.0.2|^4.0",
+                "sebastian/comparator": "^1.1|^2.0",
+                "sebastian/recursion-context": "^1.0|^2.0|^3.0"
+            },
+            "require-dev": {
+                "phpspec/phpspec": "^2.5|^3.2",
+                "phpunit/phpunit": "^4.8 || ^5.6.5"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.7.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Prophecy\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Konstantin Kudryashov",
+                    "email": "ever.zet@gmail.com",
+                    "homepage": "http://everzet.com"
+                },
+                {
+                    "name": "Marcello Duarte",
+                    "email": "marcello.duarte@gmail.com"
+                }
+            ],
+            "description": "Highly opinionated mocking framework for PHP 5.3+",
+            "homepage": "https://github.com/phpspec/prophecy",
+            "keywords": [
+                "Double",
+                "Dummy",
+                "fake",
+                "mock",
+                "spy",
+                "stub"
+            ],
+            "time": "2017-09-04T11:05:03+00:00"
+        },
+        {
+            "name": "phpunit/php-code-coverage",
+            "version": "4.0.8",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/php-code-coverage.git",
+                "reference": "ef7b2f56815df854e66ceaee8ebe9393ae36a40d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/php-code-coverage/zipball/ef7b2f56815df854e66ceaee8ebe9393ae36a40d",
+                "reference": "ef7b2f56815df854e66ceaee8ebe9393ae36a40d",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "ext-xmlwriter": "*",
+                "php": "^5.6 || ^7.0",
+                "phpunit/php-file-iterator": "^1.3",
+                "phpunit/php-text-template": "^1.2",
+                "phpunit/php-token-stream": "^1.4.2 || ^2.0",
+                "sebastian/code-unit-reverse-lookup": "^1.0",
+                "sebastian/environment": "^1.3.2 || ^2.0",
+                "sebastian/version": "^1.0 || ^2.0"
+            },
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+                "phpunit/phpunit": "~4.2"
+            },
+            "suggest": {
+                "ext-uopz": "*"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Snapshotting of global state",
+            "homepage": "http://www.github.com/sebastianbergmann/global-state",
+            "keywords": [
+                "global state"
+            ],
+            "time": "2015-10-12T03:26:01+00:00"
+        },
+        {
+            "name": "sebastian/object-enumerator",
+            "version": "2.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/object-enumerator.git",
+                "reference": "1311872ac850040a79c3c058bea3e22d0f09cbb7"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/1311872ac850040a79c3c058bea3e22d0f09cbb7",
+                "reference": "1311872ac850040a79c3c058bea3e22d0f09cbb7",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6",
+                "sebastian/recursion-context": "~2.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~5"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Traverses array structures and object graphs to enumerate all referenced objects",
+            "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
+            "time": "2017-02-18T15:18:39+00:00"
+        },
+        {
+            "name": "sebastian/recursion-context",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/recursion-context.git",
+                "reference": "2c3ba150cbec723aa057506e73a8d33bdb286c9a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/2c3ba150cbec723aa057506e73a8d33bdb286c9a",
+                "reference": "2c3ba150cbec723aa057506e73a8d33bdb286c9a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~4.4"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "Adam Harvey",
+                    "email": "aharvey@php.net"
+                }
+            ],
+            "description": "Provides functionality to recursively process PHP variables",
+            "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
+            "time": "2016-11-19T07:33:16+00:00"
+        },
+        {
+            "name": "sebastian/resource-operations",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/resource-operations.git",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides a list of PHP built-in functions that operate on resources",
+            "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
+            "time": "2015-07-28T20:34:47+00:00"
+        },
+        {
+            "name": "sebastian/version",
+            "version": "2.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/version.git",
+                "reference": "99732be0ddb3361e16ad77b68ba41efc8e979019"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/99732be0ddb3361e16ad77b68ba41efc8e979019",
+                "reference": "99732be0ddb3361e16ad77b68ba41efc8e979019",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Library that helps with managing the version number of Git-hosted PHP projects",
+            "homepage": "https://github.com/sebastianbergmann/version",
+            "time": "2016-10-03T07:35:21+00:00"
+        },
+        {
+            "name": "seld/cli-prompt",
+            "version": "1.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Seldaek/cli-prompt.git",
+                "reference": "a19a7376a4689d4d94cab66ab4f3c816019ba8dd"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Seldaek/cli-prompt/zipball/a19a7376a4689d4d94cab66ab4f3c816019ba8dd",
+                "reference": "a19a7376a4689d4d94cab66ab4f3c816019ba8dd",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Seld\\CliPrompt\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jordi Boggiano",
+                    "email": "j.boggiano@seld.be"
+                }
+            ],
+            "description": "Allows you to prompt for user input on the command line, and optionally hide the characters they type",
+            "keywords": [
+                "cli",
+                "console",
+                "hidden",
+                "input",
+                "prompt"
+            ],
+            "time": "2017-03-18T11:32:45+00:00"
+        },
+        {
+            "name": "symfony/yaml",
+            "version": "v3.3.10",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/yaml.git",
+                "reference": "8c7bf1e7d5d6b05a690b715729cb4cd0c0a99c46"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/8c7bf1e7d5d6b05a690b715729cb4cd0c0a99c46",
+                "reference": "8c7bf1e7d5d6b05a690b715729cb4cd0c0a99c46",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.5.9|>=7.0.8"
+            },
+            "require-dev": {
+                "symfony/console": "~2.8|~3.0"
+            },
+            "suggest": {
+                "symfony/console": "For validating YAML files using the lint command"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Yaml\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony Yaml Component",
+            "homepage": "https://symfony.com",
+            "time": "2017-10-05T14:43:42+00:00"
+        },
+        {
+            "name": "webmozart/assert",
+            "version": "1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/webmozart/assert.git",
+                "reference": "2db61e59ff05fe5126d152bd0655c9ea113e550f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/2db61e59ff05fe5126d152bd0655c9ea113e550f",
+                "reference": "2db61e59ff05fe5126d152bd0655c9ea113e550f",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.3 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.6",
+                "sebastian/version": "^1.0.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Webmozart\\Assert\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@gmail.com"
+                }
+            ],
+            "description": "Assertions to validate method input/output with nice error messages.",
+            "keywords": [
+                "assert",
+                "check",
+                "validate"
+            ],
+            "time": "2016-11-23T20:04:58+00:00"
+        }
+    ],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
diff --git a/git-deploy b/git-deploy
index b09c5ef..b60a453 100755
Binary files a/git-deploy and b/git-deploy differ
diff --git a/tools/build.php b/tools/build.php
index 8af608d..b6af4c3 100755
--- a/tools/build.php
+++ b/tools/build.php
@@ -1,14 +1,43 @@
 #!/usr/bin/env php
 <?php
 
+class NonProjectFilesFilter extends RecursiveFilterIterator {
+    public function accept() {
+        if ($this->hasChildren()) {
+            return true;
+        } else {
+            /** @var SplFileInfo $current */
+            $current = $this->current();
+            $realpath = substr($current->getRealPath(), strlen(dirname(__FILE__) . DIRECTORY_SEPARATOR));
+            $extension = $current->getExtension();
+            $valid_prefixes = ["src/", "vendor/composer/", "vendor/league/", "vendor/phpseclib/", "vendor/seld/", "vendor/myclabs/"];
+
+            if ($realpath == "vendor/autoload.php") {
+                return true;
+            }
+
+            foreach ($valid_prefixes as $prefix) {
+                if (substr($realpath, 0, strlen($prefix)) == $prefix && $extension == "php") {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}
+
 if (ini_get("phar.readonly")) {
-    echo "You need to set the 'phar.readonly' option to 'Off' in your php.ini file (" . php_ini_loaded_file() . ")".PHP_EOL;
+    echo "You need to set the 'phar.readonly' option to 'Off' in your php.ini file (" . php_ini_loaded_file() . ")" . PHP_EOL;
 } else {
     $phar = new Phar('git-deploy.phar', 0, 'git-deploy');
-    $phar->buildFromDirectory(dirname(__FILE__));
+    $iterator = new NonProjectFilesFilter(new RecursiveDirectoryIterator(dirname(__FILE__), FilesystemIterator::SKIP_DOTS));
+    $d = $phar->buildFromIterator(new RecursiveIteratorIterator($iterator), dirname(__FILE__));
     $phar->setStub(file_get_contents(dirname(__FILE__) . "/index.php"));
     unset($phar);
-    @unlink('../git-deploy');
-    rename('git-deploy.phar', '../git-deploy');
-    echo "Built git-deploy successfully!".PHP_EOL;
+    $path_to_git_deploy = dirname(__FILE__) . "/../git-deploy";
+    @unlink($path_to_git_deploy);
+    rename('git-deploy.phar', $path_to_git_deploy);
+    chmod($path_to_git_deploy, 0755);
+    echo "Built git-deploy successfully!" . PHP_EOL;
 }
diff --git a/tools/index.php b/tools/index.php
index 4ac0190..0055a51 100644
--- a/tools/index.php
+++ b/tools/index.php
@@ -2,11 +2,12 @@
 <?php
 
 ini_set('memory_limit', '-1');
+error_reporting(E_ALL ^ E_DEPRECATED);
 Phar::mapPhar("git-deploy");
 
 /**
  * PSR-4 autoloader.
- *      
+ *
  * @param string $class The fully-qualified class name.
  * @return void
  */
diff --git a/tools/src/Config.php b/tools/src/Config.php
index 6da3943..43615d9 100644
--- a/tools/src/Config.php
+++ b/tools/src/Config.php
@@ -73,8 +73,18 @@ public static function getServers($config_file) {
                     'ignore_files' => array(),
                     'ignore_directories' => array(),
                     'upload_untracked' => array(),
+                    'check_sync_with_remote' => false,
+                    'remote_branch' => null
                 ), $options);
 
+                if ($options['check_sync_with_remote'])
+                {
+                    if (empty($options['remote_branch']))
+                    {
+                        $options['remote_branch'] = (!empty($options['branch'])) ?  "origin/".$options['branch'] : null;
+                    }
+                }
+
                 if (!isset($options['pass']) && !isset($options['sftp_key'])) {
                     $options['pass'] = self::promptPassword();
                 }
diff --git a/tools/src/Git.php b/tools/src/Git.php
index a683fa8..cb451ab 100644
--- a/tools/src/Git.php
+++ b/tools/src/Git.php
@@ -43,7 +43,7 @@ public function get_changes($target_commit, $current_commit) {
         }
 
         if (!empty($current_commit)) {
-            $command = "diff --name-status {$current_commit} {$target_commit}";
+            $command = "diff --no-renames --name-status {$current_commit} {$target_commit}";
         } else {
             $command = "ls-files";
         }
@@ -68,11 +68,18 @@ public function get_changes($target_commit, $current_commit) {
             foreach ($result as $line) {
                 if ($line[0] == 'A' or $line[0] == 'C' or $line[0] == 'M') {
                     $path = trim(substr($line, 1, strlen($line)));
-                    $return['upload'][$path] = $this->get_file_contents("$target_commit:\"$path\"");
+                    $return['upload'][$path] = $this->get_file_contents("$target_commit:$path");
                 } elseif ($line[0] == 'D') {
                     $return['delete'][] = trim(substr($line, 1, strlen($line)));
+                } elseif ($line[0] == 'R') {
+                    $details = preg_split("/\\s+/", $line);
+                    $return['delete'][] = $details[1];
+                    $return['upload'][] = $details[2];
+                } elseif (stristr($line, "fatal: bad object") !== false) {
+                    $commit = trim(str_ireplace("fatal: bad object", "", $line));
+                    Helpers::error("The commit '$commit' does not exist in this clone of the repo.\nFor more information, check out: https://help.github.com/articles/commit-exists-on-github-but-not-in-my-local-clone/");
                 } else {
-                    Helpers::error("Unknown git-diff status: {$line[0]}");
+                    Helpers::error("Unknown git-diff status: {$line[0]} (LINE: $line)");
                 }
             }
         } else {
@@ -86,9 +93,48 @@ public function get_changes($target_commit, $current_commit) {
         return $return;
     }
 
+    // http://stackoverflow.com/a/3278427
+    public function get_status_towards_remote($local_branch, $remote_branch)
+    {
+        if (empty($local_branch))
+        {
+            $local_branch = "@";
+        }
+
+        if (empty($remote_branch))
+        {
+            $remote_branch = "@{u}";
+        }
+
+        $this->exec("remote update");
+
+        $local = $this->exec("rev-parse ".$local_branch);
+        $remote = $this->exec("rev-parse ".$remote_branch);
+        $base = $this->exec("merge-base ".$local_branch." ".$remote_branch);
+
+        if ($local == $remote)
+        {
+            $status = "up-to-date";
+        }
+        else if ($local == $base)
+        {
+            $status = "pull-needed";
+        }
+        else if ($remote == $base)
+        {
+            $status = "push-needed";
+        }
+        else
+        {
+            $status = "diverged";
+        }
+
+        return $status;
+    }
+
     protected function get_file_contents($path) {
         $temp = tempnam(sys_get_temp_dir(), "git-deploy-");
-        $this->exec('show "' . $path . '"', "> \"$temp\"");
+        $this->exec('show ' . escapeshellarg($path), "> \"$temp\"");
         return file_get_contents($temp);
     }
 
diff --git a/tools/src/Helpers.php b/tools/src/Helpers.php
index 50e29a1..0ba01ef 100644
--- a/tools/src/Helpers.php
+++ b/tools/src/Helpers.php
@@ -16,12 +16,16 @@ public static function logmessage($message) {
             fwrite($log_handle, $log);
         }
 
-        echo $log;
+        echo "\033[0m".$log;
     }
 
-    public static function error($message) {
-        self::logmessage("ERROR: $message");
-        die;
+    public static function error($message, $die = true) {
+        self::logmessage("\033[0;31mERROR: $message\033[0m");
+
+        if ($die)
+        {
+            die();
+        }
     }
 
     public static function get_recursive_file_list($folder, $prefix = '') {
diff --git a/tools/src/Server.php b/tools/src/Server.php
index e2f8575..466cdee 100644
--- a/tools/src/Server.php
+++ b/tools/src/Server.php
@@ -29,6 +29,31 @@ public function __construct($server, $deploy_script = 'deploy.ini') {
     }
 
     public function deploy(Git $git, $target_commit, $is_revert = false, $list_only = false) {
+
+        if ($this->server['check_sync_with_remote'])
+        {
+            $statusTowardsRemote = $git->get_status_towards_remote($this->server['branch'], $this->server['remote_branch']);
+
+            if ($statusTowardsRemote != "up-to-date")
+            {
+                Helpers::error("In order to deploy, local and remote repository must be in sync.", false);
+                if ($statusTowardsRemote == "push-needed")
+                {
+                    Helpers::logmessage("Push your changes to the remote and come back here to retry.");
+                }
+                else if ($statusTowardsRemote == "pull-needed")
+                {
+                    Helpers::logmessage("Pull the changes from the remote and come back here to retry.");
+                }
+                else if ($statusTowardsRemote == "diverged")
+                {
+                    Helpers::logmessage("Pull the changes from the remote, merge them with yours and then push to the repository. Thereafter come back here to retry.");
+                }
+                return;
+            }
+        }
+
+
         if ($target_commit == $this->current_commit) {
             Helpers::logmessage("Nothing to update on: $this->host");
             return;
diff --git a/tools/src/Sftp.php b/tools/src/Sftp.php
index 9ddbcbc..bf6e444 100644
--- a/tools/src/Sftp.php
+++ b/tools/src/Sftp.php
@@ -9,8 +9,6 @@ class Sftp extends Server {
     public function connect($test = false) {
         if (!$this->connection or $test) {
             $server = $this->server;
-            require_once('Crypt/RSA.php');
-            require_once('Net/SFTP.php');
 
             $this->connection = new \phpseclib\Net\SFTP($server['host'], $server['port'], 10);
             $logged_in = false;