title: Screenshot not including images using python ghost.py
body: <p>I am using ghost.py to take a screencapture of a webpage. But the script isn't capturing any of the images on the page. I've set download_images=True - but that doesn't seem to work.</p>
  
  <p>My code:</p>
  
  <pre><code>from ghost import Ghost
  
  ghost = Ghost(wait_timeout=4, download_images = True) #download_images not working
  
  ghost.open('http://sex-offender.vsp.virginia.gov/sor/policy.html')
  
  ghost.capture_to('page.png')
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/QMU98.png" alt="This is what I get - no images"></p>