Created valid? method for BartTrip model.
Referenced the valid method of BartTrip so a non-valid trip is not saved.
Commented out broken test until it can be fixed.
More checks in the valid method in BartTrip
Redirect to the correct path. Removed an extra space.
Added flash to the new trip view so that errors are shown.
redirects to correct new user path on signup fail
Merge pull request #60 from lilkraftwerk/tests_and_stuffs

Tests and stuffs