转自:http://www.jianshu.com/p/071d30a3af02
1.开启terminal(命令行窗口)
2.移除现有Ruby默认源
$ gem sources -- remove https://rubygems.org/
3. 使用新的源
$ gem sources -a https://ruby.taobao.org/
4.验证新源是否替换成功
$ gem sources -/
5.安装CocoaPods
$ sudo gem install cocoapods
$ pod setup
当苹果升级到