Merge pull request #1237 from dingpinglv/Iss3221_ReleaseV2.2.1

Issue #3221: update ChangeLog.txt ,version number and AUTHORS.txt for releasing version v.2.2.1
issue #3221: fixed typo, and replaced 3 useless games to MoonWarriors Simulator.
issue #3221: updated change log
issue #3192 javascript compress
Merge pull request #1238 from xingsenma/3192_releasing_2.2.1

issue #3192 javascript compress
Merge pull request #1239 from linshun/iss3221_v2.2.1

issue #3221: fixed typo, added simulator link to index page and updated change log
Issue #3221: set design resolution size a default value and re-implement _adjustSizeKeepCanvasSize function in EGLview
Merge branch 'develop' of https://github.com/cocos2d/cocos2d-html5 into Iss3221_ReleaseV2.2.1