updated database.yml to postgres, added pg gem, created directories and files for testing
initial set up
create basic user model
Merge pull request #5 from fiddler-crabs-2014/chore/sign-up

Chore/sign up
pushed spec folders
Merge branch 'master' of https://github.com/fiddler-crabs-2014/SoundCrowd
removed duplicate migration files, wrote initial test for playlist creation
begain on tests and controller / views for playlist create
fixed controller create test, added test for model validation (and corresponding code to make it pass)