title: Run behat chrome headless (without selenium?)
body: <p>I ran Behat test on PhantomJS without issue. I was starting it with this: </p>
  
  <pre><code>bin/phantomjs --webdriver=8643
  </code></pre>
  
  <p>It works, but I want to run a Chrome headless instead of PhantomJS. To do that I tried this:</p>
  
  <pre><code>google-chrome --headless --remote-debugging-port=8643
  </code></pre>
  
  <p>But Behat doesn't seem to start anything on this Chrome. I found a lot of docs for Chrome with Selenium but I wanted to know if it's possible to run it like I was running PhantomJS with the Selenium driver, but without Selenium server?</p>
  
  <pre><code>default:
    suites:
      default:
        contexts:
          - FeatureContext
          - Behat\MinkExtension\Context\MinkContext
    extensions:
      Behat\MinkExtension:
        base_url: 'http://myurl.com/'
        sessions:
          default:
            selenium2:
              wd_host: 'http://localhost:8643'
  </code></pre>