title: Why images at Github in markdown formatted file on are blurred?
body: <p>I have uploaded images (jpg and png) to github and used them in markdown formatted file here (first 2 images):
  <a href="https://github.com/vasili111/testRepo/blob/master/github_question.md" rel="nofollow">https://github.com/vasili111/testRepo/blob/master/github_question.md</a></p>
  
  <p>Third and fourth images are inserted with html tag.</p>
  
  <p>In link above in browser images are blurred. But they are not blurred when I access images from browser directly as here:
  <a href="https://raw.githubusercontent.com/vasili111/testRepo/master/images_for_github/3.png" rel="nofollow">https://raw.githubusercontent.com/vasili111/testRepo/master/images_for_github/3.png</a>
  <a href="https://raw.githubusercontent.com/vasili111/testRepo/master/images_for_github/3.jpg" rel="nofollow">https://raw.githubusercontent.com/vasili111/testRepo/master/images_for_github/3.jpg</a>
  <br><br></p>
  
  <p><strong>Questions:</strong> </p>
  
  <ol>
  <li><p>Why images are getting blurred?</p></li>
  <li><p>How to use images in markdown formatted text without blur effect?</p></li>
  </ol>