参考 http://blog.csdn.net/paulery2012/article/details/22929109
http://www.apkbus.com/android-127974-1-1.html
http://www.cocoachina.com/applenews/devnews/2013/0106/5478.html?1359361338
http://www.facemis.com/archives/186,
http://ruby-china.org/topics/7853
1.ASIHTTPRequest 等相关协议封装(HTTP Network库) 地址:http://allseeing-i.com/ASIHTTPRequest/
http://www.dreamingwish.com/dream-2011/powerful-asihttprequest-library-a.html
AFNetworking速成教程(1)
2.EGORefreshTableHeaderView 下拉刷新代码