Added extends description

Ivan Demidov · Ivan Demidov · commit e00979ac1295 · 2016-05-04T16:28:16.000+03:00
diff --git a/README.md b/README.md
@@ -13,8 +13,8 @@
 ```
 ## Usage
 
-Plugins will be loaded directly from your projects ***package.json*** file.
-Install them as usual with ``` npm i -S ``` or ``` npm i -D ```.
+Plugins will be loaded directly from your projects ***package.json*** file or local installed plugins.
+Install them as usual with ``` npm i -S ``` or ``` npm i -D ``` or ```npm i```.
 
 [PostHTML Plugins](https://maltsev.github.io/posthtml-plugins/)
 
@@ -24,6 +24,7 @@ After installing your plugins there a three ways to declare your plugin options.
 - Set options in your ***package.json***.
 - Create a separated ***[name].[ext]*** file, where ***[name]*** is any name you like and ***[ext]*** should be either ``` .js ``` or ``` .json ```.
 For an example of well formed options file see below.
+- For plugins not having rules installed locally will be used default settings.
 
 ## Options
 
@@ -32,26 +33,26 @@ For an example of well formed options file see below.
 ```json
 {
  "dependencies": {
-   "posthtml-bem": "^0.2.2",
-   "posthtml-each": "^1.0.1",
-   "posthtml-include": "^1.0.2"
+	 "posthtml-bem": "^0.2.2",
+	 "posthtml-each": "^1.0.1",
+	 "posthtml-include": "^1.0.2"
  },
  "devDependencies": {
-   "posthtml-style-to-file": "^0.1.1"
+	 "posthtml-style-to-file": "^0.1.1"
  },
  "posthtml": {
-   "bem": {
-     "elemPrefix": "__",
-     "modPrefix": "-",
-     "modDlmtr": "--"
-   },
-   "include": {
-     "root": "./",
-     "encoding": "utf-8"
-   },
-   "styleToFile": {
-     "path": "./dist/style.css"
-   }
+	 "bem": {
+		 "elemPrefix": "__",
+		 "modPrefix": "-",
+		 "modDlmtr": "--"
+	 },
+	 "include": {
+		 "root": "./",
+		 "encoding": "utf-8"
+	 },
+	 "styleToFile": {
+		 "path": "./dist/style.css"
+	 }
  }
 }
 ```
@@ -61,36 +62,36 @@ For an example of well formed options file see below.
 #### JS
 ```js
 module.exports = {
-  bem: {
-    elemPrefix: '__',
-    modPrefix: '-',
-    modDlmtr: '--'
-  },
-  include: {
-    root: './',
-    encoding: 'utf-8'
-  },
-  styleToFile: {
-    path: './dist/style.css'
-  }
+	bem: {
+		elemPrefix: '__',
+		modPrefix: '-',
+		modDlmtr: '--'
+	},
+	include: {
+		root: './',
+		encoding: 'utf-8'
+	},
+	styleToFile: {
+		path: './dist/style.css'
+	}
 }
 ```
 #### JSON
 
 ```json
 {
-  "bem": {
-    "elemPrefix": "__",
-    "modPrefix": "-",
-    "modDlmtr": "--"
-  },
-  "include": {
-    "root": "./",
-    "encoding": "utf-8"
-  },
-  "styleToFile": {
-    "path": "./dist/style.css"
-  }
+	"bem": {
+		"elemPrefix": "__",
+		"modPrefix": "-",
+		"modDlmtr": "--"
+	},
+	"include": {
+		"root": "./",
+		"encoding": "utf-8"
+	},
+	"styleToFile": {
+		"path": "./dist/style.css"
+	}
 }
 ```
 
@@ -111,8 +112,8 @@ const plugins = require('posthtml-load-plugins')()
 let html = fs.readFileSync('./index.html', 'utf8')
 
 posthtml(plugins)
-  .process(html)
-  .then(result => console.log(result.html))
+	.process(html)
+	.then(result => console.log(result.html))
 ```
 
 #### Options file (e.g posthtml.json)
@@ -128,9 +129,27 @@ const plugins = require('posthtml-load-plugins')('posthtml.(js|json)')
 let html = fs.readFileSync('./index.html', 'utf8')
 
 posthtml(plugins)
-  .process(html)
-  .then(result => console.log(result.html))
+	.process(html)
+	.then(result => console.log(result.html))
 ```
+
+#### Extends options
+
+```js
+'use strict'
+
+const fs = require('fs')
+
+const posthtml = require('posthtml')
+const plugins = require('posthtml-load-plugins')('posthtml.(js|json)', {"posthtml-bem": {elemPrefix: '__'}})
+
+let html = fs.readFileSync('./index.html', 'utf8')
+
+posthtml(plugins)
+	.process(html)
+	.then(result => console.log(result.html))
+```
+
 ## Contributors
 
 [![GitScrum](https://avatars.githubusercontent.com/u/2789192?s=130)](https://github.com/GitScrum) |
