Create a new app (you need to use the bamboo stack)
heroku create
heroku stack:migrate bamboo-ree-1.8.7
git push heroku master
Get the database set up by running auto migrations from datamapper
heroku console
Note.auto_migrate!
Setup environment variables for pusher.
heroku config:add PUSHER_APP_ID=_ PUSHER_KEY=_ PUSHER_SECRET=_
Done!