CocoaPods
链接】CocoaPods安装和使用教程
http://code4app.com/article/cocoapods-install-usage
【链接】cocoapods:安装/更新Ruby环境教程
http://www.cnblogs.com/Mrliheng/p/5665894.html
http://www.cnblogs.com/dsxniubility/p/4621314.html
【链接】ios项目中安装和使用CocoaPods
http://blog.csdn.net/jjmm2009/article/details/41944959
【链接】MacOS10.12系统cocoapods安装
http://blog.csdn.net/longzs/article/details/52778538
[!] Unable to find a pod with name, author, summary, or descriptionmatching `iOS\-AlipaySDK`
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rm ~/Library/Caches/CocoaPods/search_index.json
pod search AFNetworking
gem问题
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xcode-select --install
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ruby 升级不上去 解决方案
