解决CocoaPods pod search 库名找不到

1.CocoaPods 安装后 会在 /Users/Ansel/.cocoapods  下

2.如果出现pod search 库名找不到，但是库又是有的

  解决的方式： 先移除掉/Users/Ansel/.cocoapods/repos/master 

再重新安装CocoaPods ， 安装命令

                        gem sources --remove https://rubygems.org/

gem sources -a https://ruby.taobao.org/

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

xcode-select -switch /Applications/Xcode.app/Contents/Developer