[Update] Example Podfile for weixin
[Update] weixin podfile
[Update] 3.1.1 Add weixin share sdk
[Fix] NSURL+MBAdditions code bug.

编码修改为NSUTF8StringEncoding，否则腾讯微博无法分享文字加图片
[Update] 3.2.0 podspec

修复0.22.3 cocopodods can't find qqauthframeworks headers