Update README.md

Author: binaryroot

README.md

@@ -36,3 +36,6 @@ It's based on the MVC sample, splitting the application in four layers:
 ### Maintainability
 
 ViewModel concept makes application more flexible for support 
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+[![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-Android--CleanArchitecture-brightgreen.svg?style=flat)](https://android-arsenal.com/details/3/5775)