title: Symfony3 ClassNotFoundException after bundle creation
body: <p>I wanted to start a new 3.3 project in Symfony and started as usual:</p>
  
  <p>1.) Creating the new project: <code>symfony new ArtProject</code></p>
  
  <p>2.) Creating a new Bundle: <code>php app/console generate:bundle</code> (Paul/ArtBundle, yml, src/)</p>
  
  <p>Then I run the local server and when I open 127.0.0.1:8000 I get this beautiful message:</p>
  
  <blockquote>
    <p><strong>(1/1) ClassNotFoundException</strong></p>
    
    <p>Attempted to load class "PaulArtBundle" from namespace
    "Paul\ArtBundle". Did you forget a "use" statement for another
    namespace? in AppKernel.php (line 19)</p>
  </blockquote>
  
  <p>Which is strange and I haven't figured out why this happen so far. Before creating the Bundle, there was no error; I saw the typical startpage of symfony.</p>
  
  <pre><code>public function registerBundles()
  {
      $bundles = [
          new Symfony\Bundle\FrameworkBundle\FrameworkBundle(),
          ......
          new Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle(),
          new AppBundle\AppBundle(),
          new Paul\ArtBundle\PaulArtBundle(),
      ];
  }
  </code></pre>
  
  <hr>
  
  <pre><code>&lt;?php
  
  namespace Paul\ArtBundle;
  
  use Symfony\Component\HttpKernel\Bundle\Bundle;
  
  class PaulArtBundle extends Bundle
  {
  }
  </code></pre>
  
  <p>Any idea whats going on there? I did not change a thing, I only ran these commands.</p>