cocoapods的两个源。
gem sources (http://rubygems-china.oss.aliyuncs.com)
pod sources （https://coding.net/u/hging/p/Specs/git）
cd ~/.cocoapods (pod repos/master所在位置)
sudo gem update -n /usr/local/bin --system（mac10.12.1系统更新gem）
彻底删除cocoapods一次执行下面命令
sudo rm -rf ~/.cocoapods
(
sudo gem uninstall cocoapods
sudo gem uninstall cocoapods-core
sudo gem uninstall cocoapods-deintegrate
sudo gem uninstall cocoapods-downloader
sudo gem uninstall cocoapods-plugins
sudo gem uninstall cocoapods-search
sudo gem uninstall cocoapods-stats
sudo gem uninstall cocoapods-try
sudo gem uninstall cocoapods-trunk
)
如果是github.com 打不开建议修改/etc/hosts 里面的github对应的ip地址
其他不用在赘述
