:neutral_face: This can't be merged or else the app won't run on Heroku. There are a couple options for running this in development:

Either
* Start the app with `DATABASE_URL=sqlite3://./backend/db.sqlite3 bundle exec ruby app.rb`, or,
* Rebase on my master branch, `gem install foreman`, and then start the app with `foreman start` (which does the above thing for you)