add support for popular social networks in China such as QQ and WeiBo and Wechat

There are several popular social networks in China, such as:

QQ   ( [http://www.qq.com](http://www.qq.com) )
Weibo ( [http://www.weibo.com](http://www.weibo.com) )
Wechat  ( [http://www.wechat.com/en/](http://www.wechat.com/en/) )

Could you please add support for these networks?

Thank you.
