Updating README (#31)

Author: salqadri

README.md

@@ -14,8 +14,8 @@
 
 [Firebase](https://firebase.google.com) provides the tools and infrastructure
 you need to develop apps, grow your user base, and earn money. The Firebase
-Admin Java SDK enables server-side (backend) Java developers to integrate
-Firebase into their services and applications. Currently this SDK provides
+Admin Java SDK enables access to Firebase services from privileged environments
+(such as servers or cloud) in Java. Currently this SDK provides
 Firebase custom authentication support, and Firebase realtime database access.
 
 For more information, visit the
@@ -42,13 +42,14 @@ requests, code review feedback, and also pull requests.
 
 ## Supported Java Versions
 
-We support Java 7 and higher. Firebase Admin Java SDK also runs on Google App
-Engine.
+We support Java 7 and higher. Firebase Admin Java SDK also runs on [Google App
+Engine](https://cloud.google.com/appengine/).
 
 
 ## Documentation
 
 * [Setup Guide](https://firebase.google.com/docs/admin/setup/)
+* [Database Guide](https://firebase.google.com/docs/database/admin/start/)
 * [API Reference](https://firebase.google.com/docs/reference/admin/java/reference/packages)