Added release notes for upcoming 2.2.0 release (#892)

Author: Jacob Wenger

README.md

@@ -41,13 +41,13 @@ In order to use AngularFire in your project, you need to include the following f
 
 ```html
 <!-- AngularJS -->
-<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
+<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.0/angular.min.js"></script>
 
 <!-- Firebase -->
-<script src="https://www.gstatic.com/firebasejs/3.6.0/firebase.js"></script>
+<script src="https://www.gstatic.com/firebasejs/3.6.4/firebase.js"></script>
 
 <!-- AngularFire -->
-<script src="https://cdn.firebase.com/libs/angularfire/2.1.0/angularfire.min.js"></script>
+<script src="https://cdn.firebase.com/libs/angularfire/2.2.0/angularfire.min.js"></script>
 ```
 
 You can also install AngularFire via npm and Bower and its dependencies will be downloaded

changelog.txt

@@ -0,0 +1,2 @@
+feature - Added a `requireEmailVerification` argument to the [`$requireSignIn()`](https://github.com/firebase/angularfire/blob/master/docs/reference.md#requiresignin) router helper method to enforce email verification (thanks to @ericmorgan1).
+fixed - Fixed a race condition which sometimes caused an error when the Database `Reference` bound to a `$firebaseObject` instance was set to `null` (thanks to @ulion).

docs/guide/introduction-to-angularfire.md

@@ -57,13 +57,13 @@ AngularFire bindings from our CDN:
 
 ```html
 <!-- Angular -->
-<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
+<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.0/angular.min.js"></script>
 
 <!-- Firebase -->
-<script src="https://www.gstatic.com/firebasejs/3.6.0/firebase.js"></script>
+<script src="https://www.gstatic.com/firebasejs/3.6.4/firebase.js"></script>
 
 <!-- AngularFire -->
-<script src="https://cdn.firebase.com/libs/angularfire/2.0.1/angularfire.min.js"></script>
+<script src="https://cdn.firebase.com/libs/angularfire/2.2.0/angularfire.min.js"></script>
 ```
 
 Firebase and AngularFire are also available via npm and Bower as `firebase` and `angularfire`,

docs/quickstart.md

@@ -17,13 +17,13 @@ In order to use AngularFire in a project, include the following script tags:
 
 ```html
 <!-- Angular -->
-<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.8/angular.min.js"></script>
+<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.0/angular.min.js"></script>
 
 <!-- Firebase -->
-<script src="https://www.gstatic.com/firebasejs/3.6.0/firebase.js"></script>
+<script src="https://www.gstatic.com/firebasejs/3.6.4/firebase.js"></script>
 
 <!-- AngularFire -->
-<script src="https://cdn.firebase.com/libs/angularfire/2.0.1/angularfire.min.js"></script>
+<script src="https://cdn.firebase.com/libs/angularfire/2.2.0/angularfire.min.js"></script>
 ```
 
 Firebase and AngularFire are also available via npm and Bower as `firebase` and `angularfire`,