title: Directory 'uploads/' for the site filebrowser.filebrowser does not exist
body: <p>I've managed to use django-filebrowser to upload file via TinyMCE based on this documentation:
  <a href="http://django-filebrowser.readthedocs.org/en/latest/quickstart.html" rel="nofollow">http://django-filebrowser.readthedocs.org/en/latest/quickstart.html</a></p>
  
  <p>I've put reference to <code>tiny_mce.js</code> and <code>tinymce_setup.js</code> from <code>Grappeli</code> folder to my template,now <code>TinyMCE</code> works.</p>
  
  <p>but when testing <code>filebrowser</code> with this command:<code>python manage.py test filebrowser</code> I get this error:<code>Directory 'uploads/' for the site filebrowser.filebrowser does not exist.</code> ,of course all of project throw this error.I searched this error in google but no proper result!</p>
  
  <p>Note:I've gotten Grappeli worked already.</p>
  
  <p>what do U think?</p>