Frist deploy to Heroku

Since the Rails 4 removed support for initialize_on_precompile, the first deploy on Heroku will be a little different then the usual.

So, first you need to add the Heroku Postgres add-on, you can start with the dev plan. Then you need to enable the Heroku Labs user-env-compile, check this link to more information: https://devcenter.heroku.com/articles/labs-user-env-compile