Added code grade to README.md

README.md

@@ -2,6 +2,7 @@
 
 
 [![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-Easy%20App%20Updater-brightgreen.svg?style=flat)](https://android-arsenal.com/details/1/7388)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/7e8f094fd77044b5b26bc6c157bfbbc3)](https://www.codacy.com/manual/SirLordPouya/AndroidAppUpdater?utm_source=github.com&utm_medium=referral&utm_content=SirLordPouya/AndroidAppUpdater&utm_campaign=Badge_Grade)
 [![](https://jitpack.io/v/SirLordPouya/AndroidAppUpdater.svg)](https://jitpack.io/#SirLordPouya/AndroidAppUpdater)
 [![API](https://img.shields.io/badge/API-16%2B-brightgreen.svg?style=flat)](https://android-arsenal.com/api?level=16)
 [![Build Status](https://travis-ci.org/SirLordPouya/AndroidAppUpdater.svg?branch=master)](https://travis-ci.org/SirLordPouya/AndroidAppUpdater)