[ios2] 推送

http://www.cocoachina.com/bbs/simple/?t102110.html

http://article.ityran.com/archives/194

http://www.raywenderlich.com/3443/apple-push-notification-services-tutorial-part-12

http://hi.baidu.com/yang_qi168/item/480304c542fd246489ad9e91

http://www.cnblogs.com/menghe/archive/2012/02/20/2359278.html

https://parse.com/tutorials/ios-push-notifications

 http://www.dapps.net/dev/iphone/ios-push-notification-principle-realization.html

服务端 http://blog.csdn.net/chenyong05314/article/details/8725763

http://kb.cnblogs.com/kb/143190/

http://www.iteye.com/topic/1130630 

http://guandongsheng.iteye.com/blog/1873758

http://developer.apple.com/library/ios/#documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/IPhoneOSClientImp.html

NSString *pushToken = [[[[deviceToken description]

                             stringByReplacingOccurrencesOfString:@"<"withString:@""]

                            stringByReplacingOccurrencesOfString:@">"withString:@""]

                           stringByReplacingOccurrencesOfString:@" "withString:@""] ;