title: How do I separate slides when exporting an IPython notebook to reveal.js?
body: <p>When I execute an IPython notebook to a reveal.js presentation using</p>
  
  <pre><code>ipython nbconvert mynotebook.ipynb --to slides --post serve
  </code></pre>
  
  <p>I am getting all the content as a single slide. How do I separate my content into several slides?</p>
  
  <p><img src="https://i.stack.imgur.com/hg8fL.png" alt="presentation screenshot"></p>
  
  <p>I tried using <code>---</code> (hinted in <a href="http://www.youtube.com/watch?v=mNEAJvFDneE" rel="noreferrer">this</a> video), <code>\n\n\n</code> and <code>===</code> inside the notebook (as separate cells and before my titles), but it didn't change anything. I know that for a Markdown input file in reveal.js one can set the <code>data-separator</code> option, but the generated html file doesn't seem to include the content as Markdown, but inlines everything using HTML tags, so I don't know how to make IPython generate new slide tags where I want them.</p>
  
  <p>(I'm using IPython 1.1 installed via pip)</p>