title: Disable website's caching when it's converted to AMP format
body: <p>I recently converted my website to AMP. 
  It turned out, that there are some validation errors like e.g.</p>
  
  <pre><code>The attribute 'http-equiv' may not appear in tag 'meta name= and content='
  </code></pre>
  
  <p>This error message is related to the description of my page's caching.</p>
  
  <pre><code>&lt;meta http-equiv="cache-control" content="no-cache" /&gt;
  &lt;meta http-equiv="expires" content="0" /&gt;
  &lt;meta http-equiv="pragma" content="no-cache" /&gt;
  </code></pre>
  
  <p>Do you know if there is available a clean solution or at least a workaround to fix it? </p>