You'll need this software installed locally:
virtualbox
vagrant
Create a new box named centos66
:~ vagrant box add centos66 https://developer.nrel.gov/downloads/vagrant-boxes/CentOS-6.6-x86_64-v20150426.box
Provision your virtual machine, from repo top folder
:~ cd vagrant
:~ vagrant up
:~ vagrant ssh
:~ cd ~/game/game
:~ elm-reactor
Navigate to http://127.0.0.1:8000/