Install puma web server
Install foreman
Set some sane defaults for puma

Stolen from
https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server
Add Procfile for heroku dynos
Create a temporary welcome route
Set the ruby version at 2.1.1
Merge pull request #2 from vanstee/heroku

Get setup for pushing the app to heroku