Improvements to README

Author: jkasten2

README.md

@@ -7,5 +7,15 @@ OneSignal iOS Push Notification Plugin
 
 OneSignal is a free push notification service for mobile apps. This plugin makes it easy to integrate your native iOS app with OneSignal.
 
-- See https://documentation.onesignal.com/docs/ios-sdk-setup for documentation.
-- See https://documentation.onesignal.com/docs/ios-native-sdk for OneSignal API documentation.
+#### Installation
+See OneSignal's [iOS Native SDK Setup Guide](https://documentation.onesignal.com/docs/ios-sdk-setup) for documentation.
+
+#### API
+See OneSignal's [iOS Native SDK API](https://documentation.onesignal.com/docs/ios-native-sdk) page for a list of all available methods.
+
+#### Change Log
+See this repository's [release tags](https://github.com/OneSignal/OneSignal-iOS-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-iOS-SDK/issues) for feature request and bug reports related specificly to the SDK.
+For account issues and support please connect OneSignal support from the [OneSignal.com](https://onesignal.com) dashboard.