Tweak README

Author: anantn

README.md

@@ -1,8 +1,9 @@
-angularFire
+AngularFire
 ===========
-angularFire is an [AngularJS](http://angularjs.org/) service that integrates
+AngularFire is an [AngularJS](http://angularjs.org/) service that integrates
 with [Firebase](http://www.firebase.com) so you can easily add real-time
-features to your app!
+features to your app. Firebase is a full backend so you don't need servers
+to build your Angular app!
 
 The bindings let you associate a Firebase URL with a model (or set of models),
 and they will be transparently kept in sync across all clients currently using