Create initial models and migrations to reflect group plan.

Revision needed.
Model and migration files complete, but not fully tested yet;
Seed file in progress.
Merge pull request #1 from ShirajG/models_and_migrations

Models and migrations
Merge branch 'master' of https://github.com/ShirajG/Survey-Bonobo into view_controller.

Check model functionality
Fix Schema to not use user_choices. Naming a table with an underscore in it made AR crazy.