Initially run heroku create. If the gem is installed, and your credentials are configured it will create a new app for you.
Then run git push heroku master, after commiting. This will deploy your code to the heroku stack.
Since we have a database migration, we need to run that after deploying. This can be done by running `heroku run “rake db:migrate”`.
It often makes sense to add API credentials, to validate that the requester is allowed to access the given resource.