Added ability to use icons instead of text labels.
Added screenshot of chart with icons to README.md.
Added screenshot of chart with icons to repo. :-p
Got rid of the 'id' datum property. Replaced it with 'label.' Removed 'label' and 'icon' functions.
Added the 'label' function back, as well as support for 'id' as a label. Allows for backwards compatibility.
Last commit overwrote 'return timeline' at the end of d3-timeline.js. Added it back in.
Merge pull request #1 from ryepdx/master

Added icons option to chart