Adds more information on readme

yannbf · web-flow · commit 7f2da1546d63 · 2017-03-14T00:59:37.000-03:00
diff --git a/src/pages/miscellaneous/barcodescanner/Readme.md b/src/pages/miscellaneous/barcodescanner/Readme.md
@@ -1,5 +1,25 @@
-$ sudo ionic plugin add phonegap-plugin-barcodescanner
-$ sudo ionic plugin add cordova-plugin-crosswalk-webview
+# Barcode Scanner
+You can check more info on the docs: https://github.com/phonegap/phonegap-plugin-barcodescanner
 
-$ sudo ionic build android
-$ adb install -r platforms/android/build/outputs/apk/android-armv7-debug.apk
+In order to use this feature, you have to install the plugin:
+```sh
+$ ionic plugin add phonegap-plugin-barcodescanner --save --variable CAMERA_USAGE_DESCRIPTION="To scan barcodes"
+```
+
+Important note: Since iOS 10 it's mandatory to add a `NSCameraUsageDescription` in the info.plist.
+
+`NSCameraUsageDescription` describes the reason that the app accesses the user’s camera. When the system prompts the user to allow access, this string is displayed as part of the dialog box.
+
+This entry is passed on the `--variable` flag on plugin install.
+
+
+In case you want to support low end/old devices, make sure to install crosswalk:
+```sh
+$ ionic plugin add cordova-plugin-crosswalk-webview
+```
+
+You can either try it out on a device or try it using an emulator:
+```sh
+$ ionic build android
+$ adb install -r platforms/android/build/outputs/apk/android-armv7-debug.apk
+```
