title: Python PIP : package directory does not exist
body: <p>Since I uploaded my package to pypi, it seems that something is missing in my setup.py or MANIFEST.
  <a href="http://pypi.python.org/pypi/django-audiofield/" rel="nofollow">http://pypi.python.org/pypi/django-audiofield/</a></p>
  
  <p>When I try to install it :
  <strong>pip install django-audiofield</strong></p>
  
  <p>I'm always getting the error : </p>
  
  <p><strong>error: package directory 'audiofield' does not exist</strong></p>