Setting up YML to be for local machines selenium server and browser. A how to video is here https://www.youtube.com/watch?v=DRoL4OJBV0Q

behat_after.yml

default:
  paths:
    features: 'features'
  extensions:
    Behat\MinkExtension\Extension:
      default_session: selenium2
      goutte: ~
      selenium2:
        wd_host: 10.0.1.2:4444/wd/hub
      base_url: http://behateditor.com
      browser_name: safari
      javascript_session:  'selenium2'
    Drupal\DrupalExtension\Extension:
      blackbox: ~
      api_driver: 'drush'
      drush:
        alias: 'digitalocean.behateditorp_staging'
      subcontexts:
              paths:
                - "/assets/example/current/sites/all/modules/"

behat_before.yml

default:
  paths:
    features: 'features'
  extensions:
    Behat\MinkExtension\Extension:
      default_session: selenium2
      goutte: ~
      selenium2: ~
      base_url: http://behateditor.us
      browser_name: firefox
      javascript_session:  'selenium2'
    Drupal\DrupalExtension\Extension:
      blackbox: ~
      subcontexts:
              paths:
                - "/vagrant/public/drupal.vbox.local/docroot/sites/all/modules"