title: Using a Twig Extension
body: <p>I am trying to use teh Twig i18n Extension.</p>
  
  <p>As far as I can tell the file I need is here:</p>
  
  <p><a href="https://github.com/fabpot/Twig-extensions/blob/master/lib/Twig/Extensions/Extension/I18n.php" rel="nofollow">https://github.com/fabpot/Twig-extensions/blob/master/lib/Twig/Extensions/Extension/I18n.php</a></p>
  
  <p>Now I am not quite sure where to save this file</p>
  
  <p>I have Twig in a folder called includes/lib (/includes/lib/Twig). I see a folder Extension under Twig. Do I save it here?</p>
  
  <p>After I save it, do I need to do a "require_once" to the file or will Twig_Autoloader do the job for me?</p>
  
  <p>I am not using Symfony2</p>
  
  <p>Thanks
  Craig</p>