Move NSURLSessionTask.request to NSURLSessionDataTask.request to avoid bug of NSURLSessionTask on iOS 7 and Mac OS 10.9
Move NSURLSessionTask.request to NSURLSessionDataTask.request to avoid bug of NSURLSessionTask on iOS 7 and Mac OS 10.9

ishkawa/APIKit,sora0077/APIKit,ishkawa/APIKit,sora0077/APIKit