title: Pycharm *.pyd files autocomplete
body: <p>I'm using Kivy to build some apps on android. Since kivy makes use of Cython, how can I get for example:</p>
  
  <pre><code>from kivy.properties import NumericProperty
  </code></pre>
  
  <p>Note that properties is a Cython compiled file: properties.pyd</p>
  
  <p>How can I make pycharm provide/recognize this file for autocomplete.</p>