title: How to add an image to asciidoc book cover page?
body: <p>I would like to create a pdf book using asciidoc. The title page should include the title, subtitle and an image. So far I could not find any documentation on how to achive this.</p>
  
  <p>Intuivly I would do something like</p>
  
  <pre><code>My book title
  =============
  :author: myself
  :toc:
  image:images/titelimage.png[width=400]
  </code></pre>
  
  <p>but this just adds <code>image:images/titelimage.png[width=400]</code> as a subtitle. What I would like to have is something like</p>
  
  <pre><code>My book title
  &lt;titleimage&gt;
  subtitle
  </code></pre>
  
  <p>Is there a way to do this in ascciidoc? If not, what do I need to do to get this?</p>