Revert "Revert "Fix code for Xcode6.1-beta2.""

This reverts commit 7108d03af7c84e670eb4862f7f6181c56f90271f.
Fix code for Xcode6.1-GM, temporarily ignoring Alamofire tests.
Merge pull request #6 from inamiy/Xcode6.1-GM

Fix code for Xcode6.1-GM.