Created table for Restaurant Users that gives users a role for a particular restaurant
Added relationships between restaurantusers, users, and restaurants, and added validations for restaurant_id and user_id
Added default column to restaurant user roles of customer, also added a user_role to seed file, and created restaurant user fixtures
Validated that restaurant users can only have one of three roles
Added test to ensure restaurant user only valid with one of three roles
trying to make notifier work
Added test to ensure restaurant has many restaurant users
Add test to ensure users have restaurant users
Merge branch 'restaurant_users' of github.com:fluxusfrequency/fourth_meal