Setup dev env

Use vagrant to mananger dev env (This step is optional)

You need install & configure vagrant before run the commands below

vagrant up #launch the vm

vagrant ssh #connect to the vm via ssh, normally, your project code could be found under /vagrant/

some post-installation had been configured in bootstrap.sh

Use rvm to manager ruby version

install ruby

sudo rvm install ruby

install nodejs

sudo apt-get install nodejs -y

install rails

gem install rails