Updated README

Complete info.

README.md

@@ -1,2 +1,56 @@
 # cordova-plugin-android-idfa
 Phonegap, Cordova, Intel XDK plugin for Android to get Advertising Id Info
+
+Advertising ID (IDFA) Plugin for Android using Google Play Services
+
+This plugin depends on [com.google.play.services](http://plugins.cordova.io/#/package/com.google.play.services).
+Cordova (PhoneGap) 3.0+ Plugin to get Adertising ID (IDFA) on Adnroid device using Google Play Sercies API.
+Obtains [advertising id (IDFA) info](https://support.google.com/googleplay/android-developer/answer/6048248?hl=en).
+
+**iOS CAUTION:** This plugin is for Android Platform only.
+
+Prerequisites:
+* A Cordova 3.0+ project for Android
+* Google Play Services API 
+
+---
+## Platform SDK supported ##
+
+* Android, using Google Play Services for Android
+
+---
+## Quick start ##
+
+To install this plugin, follow the [Command-line Interface Guide](http://cordova.apache.org/docs/en/edge/guide_cli_index.md.html#The%20Command-line%20Interface). You can use one of the following command lines:
+
+* `cordova plugin add cordova-plugin-android-idfa`
+* `cordova plugin add https://github.com/praves77/cordova-plugin-android-idfa.git`
+
+Make sure to review the Google Play Developer Program [policy](https://play.google.com/about/developer-content-policy.html#ADID) and [terms](https://play.google.com/about/developer-distribution-agreement.html#use)
+
+---
+## Javascript API ##
+
+*Note:* All success callbacks are in the form `'function () {}'`, and all failure callbacks are in the form `'function (err) {}'` where `err` is a String explaining the error reason.
+
+
+### Advertising id info ###
+#### getAdInfo(success, error);
+Gets the advertising id (IDFA) info (id and limit ad flag).
+
+* {function()} success:    success callback with {idfa: <advertising id (IDFA)>, isLimitAd: <boolean> object argument.
+* {function()} failure:    failure callback.
+
+### Advertising id ###
+#### getAdId(success, error);
+Gets the advertising id (IDFA).
+
+* {function()} success:    success callback with <advertising id (IDFA)> string argument.
+* {function()} failure:    failure callback.
+
+### Limit Ad Flag ###
+#### getLimitAdFlag(success, error);
+Gets the limit add flag.
+
+* {function()} success:    success callback with isLimitAd flag boolean argument.
+* {function()} failure:    failure callback.