Improved README format

Author: jkasten2

README.md

@@ -9,3 +9,17 @@ OneSignal is a free push notification service for mobile apps. This plugin makes
 - See https://documentation.onesignal.com/docs/android-sdk-setup for Android setup documentation.
 - See https://documentation.onesignal.com/docs/amazon-sdk-setup for Amazon setup documentation.
 - See https://documentation.onesignal.com/reference for OneSignal API documentation.
+
+
+#### Installation
+See OneSignal's [Android Native SDK Setup Guide](https://documentation.onesignal.com/docs/android-sdk-setup) for documentation.
+
+#### API
+See OneSignal's [Android Native SDK API](https://documentation.onesignal.com/docs/android-native-sdk) page for a list of all available methods.
+
+#### Change Log
+See this repository's [release tags](https://github.com/OneSignal/OneSignal-Android-SDK/releases) for a complete change log of every released version.
+
+#### Support
+Please visit this repository's [Github issue tracker](https://github.com/OneSignal/OneSignal-Android-SDK/issues) for feature requests and bug reports related specificly to the SDK.
+For account issues and support please contact OneSignal support from the [OneSignal.com](https://onesignal.com) dashboard.