Using this is pretty simple, but you will need jQuery (and I would recommend 1.5.x so the data attributes are read correctly from the HTML):
First set up your page, for example on the Tile5 site I have something like:
<h2>0.9.5</h2> <ul class="roadmap-items" data-label="0.9.5"></ul> <h2>0.9.6</h2> <ul class="roadmap-items" data-label="0.9.6"></ul>