title: Running Django test with setup.py test and tox
body: <p>I built a Django app and made a package out of it with <code>setuptools</code>. Now, I would like to do the following things:</p>
  
  <ol>
  <li><p>I would like to run all tests with <code>python setup.py test</code>. But when I issue this command, I get:</p>
  
  <pre><code>/usr/lib/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
  warnings.warn(msg)
  usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
  or: setup.py --help [cmd1 cmd2 ...]
  or: setup.py --help-commands
  or: setup.py cmd --help
  
  error: invalid command 'test'
  </code></pre></li>
  <li><p>I would like to use Tox to run my tests, but I have no idea what should I write in the <code>command</code> attribute to run my Django app tests.</p></li>
  </ol>