chore(README): add useful badges

Author: codef0rmerz

README.md

@@ -1,4 +1,8 @@
-#Drag and Drop for AngularJS (with Animation) [![Build Status](https://api.travis-ci.org/codef0rmer/angular-dragdrop.svg?branch=master)](https://travis-ci.org/codef0rmer/angular-dragdrop)
+#Drag and Drop for AngularJS (with Animation)
+[![Build Status](https://api.travis-ci.org/codef0rmer/angular-dragdrop.svg?branch=master)](https://travis-ci.org/codef0rmer/angular-dragdrop)
+[![npm](https://img.shields.io/npm/dt/angular-dragdrop.svg)](https://www.npmjs.com/package/angular-dragdrop)
+[![npm version](https://img.shields.io/npm/v/angular-dragdrop.svg)](https://www.npmjs.com/package/angular-dragdrop)
+[![Bower version](https://img.shields.io/bower/v/angular-dragdrop.svg)](https://github.com/codef0rmer/angular-dragdrop)
 
 ---