title: --javascript-delay for doing a screenshot using imgkit and Python
body: <p>Using Python, imgkit and wkhtmltopdf (2.0) library I'm trying to make a screenshoot for the whole page. After some preparation I'm calling a method make_screenshot: </p>
  
  <pre><code>def make_screenshot(url):
     options = {
      'format': 'png',
      'javascript-delay': '2000',
  }
  
  return imgkit.from_url(url, False, options=options)
  </code></pre>
  
  <p>But when it runs I'm obtaining an error like this:</p>
  
  <pre><code>Loading page (1/2)
  Rendering (2/2)                                                    
  Warning: Received createRequest signal on a disposed ResourceObject's NetworkAccessManager. This might be an indication of an iframe taking too long to load.
  Done  
  </code></pre>
  
  <p>Screenshot, which is created, shows that page isn't fully loaded. How to resolve it?</p>