https://gorails.com/setup/ubuntu/14.04
sudo apt-get update
sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev
sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev
gpg2 --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
curl -L https://get.rvm.io | bash -s stable
source ~/.rvm/scripts/rvm
rvm install 2.1.5
rvm use 2.1.5 --default
echo "gem: --no-ri --no-rdoc" > ~/.gemrc
gem install bundler