If you've manage to generate the app, all you should need is Postgres.app.
A rake command is included to start up Postgres.app if it isn't running already and then start the Rails app with Puma at http://localhost:3000.
$ rake start
This app is made to be deployed to Heroku
and should work out of the box as long as the environment variables
from .env
are set on Heroku using heroku config:set VARIABLE_NAME=VALUE
.