修改bug:
1. Message和MessageTypes应该挂在xFace对象上，而不是window
2. 去掉js文件开头不必要的define
Add test
add <!DOCTYPE html>
Fix com.polyvi.xface.extension.messaging.Messaging already define problem
fix messaging bug
normalized license, gitignore file
[Doing-235] In order to be compatible with Cordova,replaced XLogI and XLogE with DLog and ALog respectively.
added releasenotes