Fixes #9

Avoid conflicting bitmapExId
5a46210bd8b1ec3e402038beb10779de8d630cf7
Improve the performance by reducing the number of matrix manipulation
Update LICENSE.3RDPARTY
Add TweenLWF.cs that is derived from tween.js
Use https://github.com/imaya/base64.js
Fix for NGUI
disable the warning "script running too long".