title: pycharm quick documentation (CTRL+Q) not loading local documented file
body: <p>I'm using pycharm 2016.1.</p>
  
  <p>I have a function documented as follows:</p>
  
  <pre><code>def extract_filename(filepath, ext=None):
      """
      This function returns the filename from a complete filepath including its extension.
      If ext is set to an extension it is removed from the filename.
  
  
      Parameters
      ----------
      filepath : string
      ext : string
  
      Returns
      -------
      string
      """
  
      if ext[0] != ".":
          ext = "." + ext
  
      filename = filepath.split("/")[-1]
      if ext is not None:
          filename = filename.split(ext)[0]
  
      return filename
  </code></pre>
  
  <p>I was expecting that once this documentation is in place, I'd be able to see it in the quick documentation window that pops up when I press CTRL + Q. However, this is not the case. The window only shows type inference:</p>
  
  <pre><code>def extract_filename(filepath, ext=None) Inferred type: (filepath: Union[str, unicode], ext: Union[str, unicode]) -&gt; Union[str, unicode]
  </code></pre>
  
  <p>What am I missing here?  I thought that by documenting my function its description and parameters would show up nicely formatted.</p>
  
  <p>I found this post: <a href="https://stackoverflow.com/questions/31796481/documenting-python-parameters-in-docstring-using-pycharm">Documenting Python parameters in docstring using PyCharm</a>. However wish to use the NumPy format for writing documentation.</p>
  
  <p>Thanks!</p>