Update README.md

Author: ajitsing

README.md

@@ -1,6 +1,7 @@
 # apkToJava
 [![Gem Version](https://badge.fury.io/rb/apkToJava.svg)](https://badge.fury.io/rb/apkToJava)
 ![Gem Downloads](http://ruby-gem-downloads-badge.herokuapp.com/apkToJava?type=total)
+[![Open Source Love](https://badges.frapsoft.com/os/v1/open-source.svg?v=102)](https://opensource.org/licenses/MIT)
 
 A ruby gem to view android apk as java code in GUI