Merge pull request #176 from bassaer/develop

fix license badge

README.md

@@ -4,7 +4,7 @@
 [![Android Arsenal](https://img.shields.io/badge/Android%20Arsenal-ChatMessageView-brightgreen.svg?style=flat)](https://android-arsenal.com/details/1/5032)
 [![Download](https://api.bintray.com/packages/tnakayama/ChatMessageView/chatmessageview/images/download.svg) ](https://bintray.com/tnakayama/ChatMessageView/chatmessageview/_latestVersion)
 [![API](https://img.shields.io/badge/API-15%2B-blue.svg?style=flat)](https://android-arsenal.com/api?level=15)
-[![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat)](https://github.com/bassaer/ChatMessageView/blob/master/LICENSE)
+[![Apache-2.0](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](https://github.com/bassaer/ChatMessageView/blob/master/LICENSE)
 
 This library aims to provide a chat UI view for Android.