Add brand to cars
Create a driver model
Add a scaffolded drivers controller
Add drivers routes
Add generated view for drivers
Set permited paramters for drivers
Add driving style scaffold
Add association between Driver and DrivingStyle
Rename type column in DrivingStyle
Permit driving style attributes in DriversController
Make driver model accept nested attributes for driving style
Create a nested attributes form for driver
Setup driver for the nested form
Rename type to style type in views
Dirsplay driving sryle of drivers
Merge branch 'play'