title: When running `bin/behat` I get a "Class not found" error
body: <p>When I run <code>bin/behat</code> I get this error.</p>
  
  <blockquote>
    <p>PHP Fatal error:  Class 'Symfony\Component\Console\Application' not found in 
    /vendor/behat/behat/src/Behat/Behat/Console/BehatApplication.php on line 31</p>
  </blockquote>
  
  <p>My composer.json file contains this:</p>
  
  <blockquote>
    <p>{<br>
     "require": {<br>
       "drupal/drupal-extension": "<em>",<br>
       "behat/behat": "2.4.</em>@stable",<br>
       "behat/mink": "1.4@stable",<br>
       "behat/mink-goutte-driver": "<em>",<br>
       "behat/mink-selenium-driver": "</em>",<br>
       "behat/mink-selenium2-driver": "<em>",<br>
       "behat/mink-sahi-driver": "</em>",<br>
       "behat/mink-zombie-driver": "<em>",<br>
       "behat/mink-extension": "</em>"<br>
     },<br>
     "minimum-stability": "dev",<br>
     "config": {<br>
       "bin-dir": "bin/"<br>
     }<br>
    }  </p>
  </blockquote>
  
  <p>And for some reason symfony/CssSelector is failing to clone:</p>
  
  <blockquote>
    <p>[RuntimeException]<br>
     Failed to clone via git, https and http protocols, aborting.  </p>
    
    <ul>
    <li><p>git://github.com/symfony/CssSelector.git<br>
    fatal: No such remote 'composer'  </p></li>
    <li><p><a href="https://github.com/symfony/CssSelector.git" rel="nofollow">https://github.com/symfony/CssSelector.git</a><br>
    fatal: No such remote 'composer'  </p></li>
    <li><p><a href="http://github.com/symfony/CssSelector.git" rel="nofollow">http://github.com/symfony/CssSelector.git</a><br>
    fatal: No such remote 'composer'  </p></li>
    </ul>
  </blockquote>