0.更新pod
sudo gem install -n /usr/local/bin cocoapods --pre
1.pod setup 执行不成功
2.所以只能去下载一个仓库下来
放到根目录
~/.cocoapods/repos/master
再执行命令更新一下本地的仓库：
pod repo update
pod repo update --verbose
如果出现以下错误
[!] Unable to find a pod with name, author, summary, or description matching 'mj'
rm ~/Library/Caches/CocoaPods/search_index.json
重装Git
$ brew remove git
$ brew remove curl
$ brew install openssl
$ brew install --with-openssl curl
$ brew install --with-brewed-curl --with-brewed-openssl git
