title: How to include docs directory in python distribution
body: <p>I have a python project with the following structure:</p>
  
  <pre><code>Clustering  (project name)
    clustering  (package)
      clustering.py and other modules
      tests  (sub-package)
        test_clustering.py and other such files
    docs/
    bin/
  </code></pre>
  
  <p>I would like to include the docs directory in my distribution, but I can not seem to do that. Any pointers about how this can be done would be very helpful.</p>
  
  <p>My current setup.py looks like this:</p>
  
  <pre><code>from distutils.core import setup
  setup(name='Clustering',
        version='1.0',
        description='desc',
        author='A',
        author_email='me@somemail.com',
        packages=['clustering', 'clustering.tests'],
        requires=['numpy', 'scipy'],
        scripts=['bin/predict', 'bin/verify']
       )
  </code></pre>
  
  <p>I tried using the package_data option but haven't been successful in including the docs directory in the distribution. Is there some other conventional way of including your docs in the distribution?</p>