Xcode Build Settings Architectures
http://foggry.com/blog/2014/05/09/xcodeshe-zhi-xiang-zhi-architectureshe-valid-architectures/
https://my.oschina.net/shede333/blog/172785
http://foggry.com/blog/2014/05/09/xcodeshe-zhi-xiang-zhi-architectureshe-valid-architectures/
https://my.oschina.net/shede333/blog/172785