DiscourseCommentsGhost.js

<div id="discourse-comments"></div>

<script type="text/javascript">
  var discourseUrl = "http://discourse.yourdomain.com/", //root URL of your Discourse forum
      discourseEmbedUrl = 'http://yourdomain.com/discourse-on-ghost.html'; //URL of your blog post

  (function() {
    var d = document.createElement('script'); d.type = 'text/javascript'; d.async = true;
      d.src = discourseUrl + 'javascripts/embed.js';
    (document.getElementsByTagName('head')[0] || document.getElementsByTagName('body')[0]).appendChild(d);
  })();
</script>