sudo apt-get install curl
curl -L
https://get.rvm.io | bash -s stable
curl -sSL
https://rvm.io/mpapis.asc | gpg --import
curl -L
https://get.rvm.io | bash -s stable
rvm -v
source ~/.rvm/scripts/rvm
rvm install 2.0.0
gem install middleman
middleman init MY_PROJECT
cd MY_PROJECT
middleman server
vim Gemfile
bundle install
gem install ref -v '1.0.5'
http://www.cnblogs.com/ufindme/p/4093597.htmlhttp://sunl030600.iteye.com/blog/1912859