ERROR: Could not find a valid gem 'rails' (>= 0), here is why:
Unable to download data from https://rubygems.org/ - Errno::ECONNRESET
: An existing connection was forcibly closed by the remote host. - SSL_connect (
https://api.rubygems.org/latest_specs.4.8.gz)
win7平台
怎么弄呀 .gz包 下载不了

换源
gem source -r https://rubygems.org/
gem source -a https://ruby.taobao.org/

gem sources --add https://gems.ruby-china.org/ --remove https://rubygems.org/
ruby.taobao.org的源已经停止更新了，请参考如下页面
http://gems.ruby-china.org/