Note that Heroku Config is found in /.git/config
** Make sure you have setup your git properly before pushing to Heroku **
- Database must be Postgres:
gem 'pg'
- Heroku uses unicorn, so you need:
gem 'unicorn'
- Heroku needs this gem too:
gem 'rails_12factor', group: :production
- Add
ruby '2.0.0'
to the top of your Gemfile - Remove
gem 'sqlite3'
from your Gemfile - Setup
Procfile
as per https://devcenter.heroku.com/articles/getting-started-with-rails4#webserver