Render markdown in notes

[kbrock]

I was hoping to submit a PR instead of an issue...

I want to have an aside with markdown in it. e.g.:

<aside class="metrics" markdown="1">
**fun** stuff
</aside>

I've tried leveraging notes (I was going to hack css for speaker notes) But I can't get it to create a node with bold in it.

``notes
**fun**
``

I've tried modifying slide_markdown.rb by adding postprocess(preprocess(code)) but it still didn't work.

Any suggestions how to create a node with div around it (and css name)?

Thanks as always for the great tool.

[jedcn]

How does #69 look to you?

[jedcn]

Version 3.4.0 has been published here (https://rubygems.org/gems/reveal-ck/versions/3.4.0) if you'd like to try it out.