Markdown sitenotes

[oskarrough]

I need a markdown tool to convert this:

One of the most distinctive features of Tufte’s style is his extensive use of sidenotes.
<small>This is a sidenote.</small>. And here is another one <small>Yes, me.</small>.

Into this:

One of the most distinctive features of Tufte’s style is his extensive use of sidenotes. 
<label for="sn-some-unique-id" class="note-toggle note-number"></label>
<input type="checkbox" id="sn-some-unique-id" class="note-toggle"/>
<span class="note note--side">This is a sidenote.</span>

And here is another one <label for="sn-another-unique-id" class="note-toggle note-number"></label>
<input type="checkbox" id="sn-another-unique-id" class="note-toggle"/>
<span class="note note--side">Yes me.</span>.