解决Mac升级到10.13.2版本CocoaPods 报错

错误提示 Ruby.framework/Versions/2.0/usr/bin/ruby: bad interpreter: No such file or directory

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

原文链接 https://github.com/CocoaPods/CocoaPods/issues/6898#issuecomment-332060096