title: User Bundle on Symfony 2.2
body: <p>I tried to install the FOSUserBundle on Symfony 2.2 without any success.
  I followed all the steps described <a href="https://github.com/FriendsOfSymfony/FOSUserBundle/blob/master/Resources/doc/index.md" rel="nofollow">here</a> 
  but always getting this error : </p>
  
  <blockquote>
    <p>MappingException: The class 'Acme\UserBundle\Entity\User' was not found in the chain configured namespaces FOS\UserBundle\Entity</p>
  </blockquote>