Wrote feature spec
Removed erroneous 'it' blocks from tests
Added car factory
Replaced root_path with cars/new
Added route to cars/new
Added car model specs
Updated test to make sure year is 2014 or under
Generated car model & cars table
Car model specs pass
Removed erroneous link to 'Add Car'
Added simple_form gem
Added index action in routes because the cars/new path apparently doesn't work without it
Add_new_car 'happy path' spec now passing
Forgot to install simple_form before - did it now
Modified car_spec & model b/c customizing year error message broke validates_inclusion test
notice now displays properly
Fixed css selectors in test