Install RSpec
Install Cucumber
Add scenario for viewing a repository with a Git URL
Add step for entering a repository URL
Install Capybara
Install Rack
Connect Capybara to an empty Rack app
Set a default content type
Render a form
Silence RSpec matcher deprecation warnings

These are coming from Capybara, so there's nothing I can do about it.
Add step for seeing repository branches
Install Rugged
Fetch and display branch names