修改项目生成Gemfile的模板
gedit $rvm_path/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/generators/rails/app/templates/Gemfile
第一行改为 :
source 'https://ruby.taobao.org'
保存关闭
$rvm_path/gems/ruby-2.1.5/gems/railties-4.1.8/lib/rails/generators/rails/app/templates/Gemfile