Bundle pry
Bundle acts-as-taggable-on
bin/rake acts_as_taggable_on_engine:install:migrations
bin/rake db:migrate
User can save tags of the course
Show tags on the course page
Show tag cloud on user page
Implement tagged courses page
Tweak css of tagged courses page
Set user_id before save the factory
tagged_courses_path is not require authentication
Set hillclimb and cycling course as factory_girl
Add specs