AFNetworking 3.0.4

AFNetworking3.0.4发布，此版本修复了AFNSURLSessionTaskDidResumeNotification被移除两次的问题。设置超时AFHTTPSessionManager*session=[AFHTTPSessionManagermanager];[session.requestSerializerwillChangeValueForKey:@"timeoutInterval"];session.requestSerializer.timeoutInterval=20.0f;[session.requestSeri