Update to Ruby 2.1.1, Update Gemfile and lockfile
Minor refactoring
Minor refactoring
Add debugger, re-generate Gemfile.lock

- Adds a byebug, a debugger compatible with Ruby 2.x
- Re-generates Gemfile.lock
Add cucumber features
Update Cucumber tests
Update Cucumber tests
Add Cucumber tests
Add tests in Cucumber

- Adds Cucumber scenarios, steps, and step definitions for filtering and
  reordering the movies index