替换RubyGems 镜像



更换gem的源：[root@tvm-rpm~]#gemsources--removehttp://rubygems.org/[root@tvm-rpm~]#gemsources-ahttp://mirrors.aliyun.com/rubygems/[root@tvm-rpm~]#gemsources-ahttps://ruby.taobao.org/[root@tvm-rpm~]#gemsources-l***CURRENTSOURCES***http://mirrors.aliyun.com/rubygems/https://ruby.taobao.org/参考：https://ruby.taobao.org/http://theo.im/blog/2014/05/20/use-aliyun-mirror-to-boost-up-download-speed/