Set local ruby version to 2.1.5.
Add fields firstname, lastname to Users model.
Add validation for fields firstname, lastname in User model.
Add  fields firstname, lastname in Devise sign up view.
Add attr_accesor for firstname, lastname fields in User model.
Add field admin in User model.
Add admin? method in User model.
Add uniqueness validation for name in Category model.
Product Model validations and average rating calculation.
Add validations for Review model.
Add devise to routes. Check if  admin in categories controller.
Owner checker in products_controller. Author full_name decorator. Devise view fix.