title: How do I tell readthedocs which requirements file to load ?
body: <p>My readthedocs.org build just started failing ... I am not sure why exactly and not particularly adept at Sphynx.  I don't understand why it's attempting to build things for requirements files outside of the <code>docs</code> directory or why it can't find this version of Django suddenly (or why it even needs to). </p>
  
  <h3>failing message</h3>
  
  <pre><code>Collecting Django==2.0.3 (from -r /home/docs/checkouts/readthedocs.org/user_builds/django-hitcount/checkouts/latest/example_project/requirements.txt (line 1))
    Could not find a version that satisfies the requirement Django==2.0.3 (from -r /home/docs/checkouts/readthedocs.org/user_builds/django-hitcount/checkouts/latest/example_project/requirements.txt (line 1)) (from versions: 1.1.3, ...1.11.11)
  No matching distribution found for Django==2.0.3 (from -r /home/docs/checkouts/readthedocs.org/user_builds/django-hitcount/checkouts/latest/example_project/requirements.txt (line 1))
  </code></pre>
  
  <h3>repo</h3>
  
  <p>This is for: <a href="https://github.com/thornomad/django-hitcount" rel="nofollow noreferrer">https://github.com/thornomad/django-hitcount</a></p>
  
  <p>If you would like to see the ways I have messed this up!  Thanks</p>