Update README.md

Author: Tushar-Acharya

README.md

@@ -3,6 +3,8 @@ An iOS Passbook-like highly customisable stack of cards implementation for Andro
 
 [![Build Status](https://travis-ci.org/mutualmobile/CardStackUI.svg?branch=master)](https://travis-ci.org/mutualmobile/CardStackUI)
 
+[![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-CardStackUI-green.svg?style=true)](https://android-arsenal.com/details/1/3096)
+
 <table>
   <tr>
     <td><h4>Init Animation</h4></td>