added bower badge

Author: yoavaa

README.md

@@ -1,6 +1,10 @@
-Angular Tree Control [![Build Status](https://travis-ci.org/wix/angular-tree-control.png)](https://travis-ci.org/wix/angular-tree-control) [![Coverage Status](https://coveralls.io/repos/wix/angular-tree-control/badge.png)](https://coveralls.io/r/wix/angular-tree-control)
+Angular Tree Control
 ================
 
+[![Bower version](https://badge.fury.io/bo/angular-tree-control.svg)](http://badge.fury.io/bo/angular-tree-control)
+[![Build Status](https://travis-ci.org/wix/angular-tree-control.png)](https://travis-ci.org/wix/angular-tree-control)
+[![Coverage Status](https://coveralls.io/repos/wix/angular-tree-control/badge.png)](https://coveralls.io/r/wix/angular-tree-control)
+
 Pure [AngularJS](http://www.angularjs.org) based tree control component.
 
 [![ScreenShot](https://raw.github.com/wix/angular-tree-control/master/images/sample.png)](http://jsfiddle.net/8ApLX/5/)