This Workflow listens in the factor-io/console room in Gitter for someone to say "deploy xyz" (where 'xyz' is the branch).

gitter-github-heroku-deploy.rb

listen 'gitter','room_message', room:'factor-io/console', filter:'deploy ([a-zA-Z]*)' do |chat_info|
  run 'github','download_repo',repo:'console',username:'factor-io', branch:chat_info['matches'][0] do |repo_info|
    run 'heroku','deploy',resource_id:repo_info['resource']['id'], app:'factor-console' do |heroku_info|
      run 'gitter','send', room:'factor-io/console', message:"Console deployed, release #{heroku_info['release']}"
    end
  end
end