WIP adding SQLAlchemy and User models.
Login / logout support (using twitter).
Add psycopg2 to requirements.
Fix for Procfile woes. (+2 squashed commits)
Squashed commits:
[0d5c338] Update to Procfile.
[2d69edd] Fix for bug in Procfile.
Merge branch 'feature/database'

* feature/database:
  Fix for Procfile woes. (+2 squashed commits) Squashed commits: [0d5c338] Update to Procfile. [2d69edd] Fix for bug in Procfile.
  Add psycopg2 to requirements.
  Login / logout support (using twitter).
  WIP adding SQLAlchemy and User models.