OS X 10.11安装CocoaPods出现的问题

如果在装CocoaPods的时候报错：

ERROR: While executing gem … (Errno::EPERM)

Operation not permitted - /usr/bin/pod

则之前的安装命令 sudo gem install cocoa pods 改为 sudo gem install -n /usr/local/bin cocoapods

如果还是报错：

WARNING: Unable to pull data from ‘http://ruby.taobao.org/‘: bad response Not Found 404 (http://ruby.taobao.org/specs.4.8.gz)

所以替换为淘宝镜像，注意是https

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