Update README.md

Author: davideast

README.md

@@ -3,16 +3,14 @@
   <p align="center">The official library for Firebase and Angular 2</p>
 </p>
 
-### AngularFire2 is currently not on new Firebase 3.0 SDK, but there is an update in progress.
-
 [![Build Status](https://travis-ci.org/angular/angularfire2.svg?branch=master)](https://travis-ci.org/angular/angularfire2) [![Join the chat at https://gitter.im/angular/angularfire2](https://badges.gitter.im/angular/angularfire2.svg)](https://gitter.im/angular/angularfire2?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
 Status: Beta
 
 ## What is AngularFire2?
 
 - **Observable based** - Use the power of rxjs, Angular 2, and Firebase.
-- **Realtime bindings** - Synchronize collections as objects or lists.
+- **Realtime bindings** - Synchronize database collections as objects or lists.
 - **Authentication** - Monitor authentication state in realtime.
 
 ## Install
@@ -48,12 +46,10 @@ export class MyApp {
 ## Developer Guide
 If you want to get started quickly on building with AngularFire2, check out our
 5 step developer guide that will teach you everything you need to know to be 
-dangerous with AngularFire2.
+productive with AngularFire2.
 
 1. [Installation & Setup](docs/1-install-and-setup.md)
 2. [Retreiving data as objects - FirebaseObjectObservable](docs/2-retrieving-data-as-objects.md)
 3. [Retreiving data as lists - FirebaseListObservable](docs/3-retrieving-data-as-lists.md)
 4. [Querying lists](docs/4-querying-lists.md)
 5. [User Authentication - FirebaseAuthentication](docs/5-user-authentication.md)
-
-## [API Reference](docs/api-reference.md)