title: Drupal 8 autoload don't load custom class
body: <p>I recently decided to develop a new website with drupal 8 (i never used drupal 7 or other version). 
  I had to create a module and i need a custom class in this module and i create a service to use it. But i've an error, my custom class is not find.</p>
  
  <p>When i had a require of my class in the autoload.php, it's work. So my service is correct but my class is not include in my autoload.</p>
  
  <p>Anyone have a solution for my problem ?</p>