title: Why commented codes of HTML not converting whlie jade conversion
body: <p>I am trying to convert <code>HTML</code> code chunk to jade using some online tools but none seems to work for me, let me now what I am doing wrong here as I am new to jade so using these tools.</p>
  
  <p><strong>HTML code</strong> -</p>
  
  <pre><code>&lt;!DOCTYPE html&gt;
  &lt;!--[if lt IE 7]&gt;      &lt;html class="no-js sidebar-large lt-ie9 lt-ie8 lt-ie7"&gt; &lt;![endif]--&gt;
  &lt;!--[if IE 7]&gt;         &lt;html class="no-js sidebar-large lt-ie9 lt-ie8"&gt; &lt;![endif]--&gt;
  &lt;!--[if IE 8]&gt;         &lt;html class="no-js sidebar-large lt-ie9"&gt; &lt;![endif]--&gt;
  &lt;!--[if gt IE 8]&gt;      &lt;html class="no-js sidebar-large"&gt; &lt;![endif]--&gt;
  </code></pre>
  
  <p><strong>Returned jade code</strong> -</p>
  
  <pre><code>doctype html
  html.no-js.sidebar-large
    // &lt;![endif]
  </code></pre>
  
  <p>I am converting this chunk by chunk as my html file is too big so exceeds the word/character limit while using.</p>
  
  <p>Tools Used - </p>
  
  <ol>
  <li><a href="http://html2jade.vida.io/" rel="nofollow">http://html2jade.vida.io/</a></li>
  <li><a href="http://html2jade.aaron-powell.com/" rel="nofollow">http://html2jade.aaron-powell.com/</a></li>
  </ol>