安装需要用到Ruby，虽然Mac自带了Ruby，不过版本有点老了，最好更新一下

sudo gem update --system

因为Ruby的软件源rubygems.org被屏蔽了，所以要更换源

gem sources --add https://gems.ruby-china.com/ --remove https://rubygems.org/

接下来查看下源路径是否更换了

gem sources -l

CocoaPods安装

sudo gem install -n /usr/local/bin cocoapods

输入 pod --verson 查看cocoapods当前的版本

克隆库到本地

git clone https://gitee.com/cjsliuj/CocoaPodsSpecsMirror.git ~/.cocoapods/repos/master --progress

最后再执行pod setup

CocoaPods 1.7.0.beta.3 is available.

To update use: `sudo gem install cocoapods --pre`

[!] This is a test version we'd love you to try.