Add security extension for ios.
fix bug: engine name="cordova"
add test for security plugin
修改plugin.xml,将StringEncodeType.js注册移到公共部分

StringEncodeType.js 3个平台都是一样的
实现xface security 扩展appworkspace下的文件加密
[Android] Fixed security bug
normalized license, gitignore file
[iOS] resolve warning
[Doing-235] In order to be compatible with Cordova,replaced XLogE with ALog.
added releasenotes