Fix so that DATABASE_URL can be read from the .env file

[mattt]

This is automatically populated when $ foreman start is run, and is pre-set as an environment variable when deploying to Heroku, so this shouldn't be necessary... Are you running this some other way?

[natecook1000]

I was getting an error that the connection was nil when trying to build the database with bundle exec rake db:seed. Could it be my ruby version? I'm on 2.0.0p451.

[mattt]

Ah, you'd need to do $ foreman run bundle exec rake db:seed (a mouthful, I know).

I personally like not having that automatically defined for Rake tasks, since I actually populate the production database locally from that, passing in the DATABASE_URL from $ heroku:config

[natecook1000]

Great! I'll back this out and update the README instead.

[mattt]

:ok_hand: :grin: