http://blog.sina.com.cn/s/blog_5a6efa330101dx05.html
http://blog.youkuaiyun.com/yipanbo/article/details/38442635
http://www.lvtao.net/ios/558.html
http://jingyan.baidu.com/article/ff411625b8141312e48237a7.html
http://blog.youkuaiyun.com/xdrt81y/article/details/19109775
http://open.zhui.cn/index.php?title=MAC%E7%8E%AF%E5%A2%83%E4%B8%8B%E7%94%9F%E6%88%90Apple%E8%AF%81%E4%B9%A6%E6%95%99%E7%A8%8B