Sweet! I've got a thing for micro-frameworks/libraries like this. It's surprising how much functionality fits in less than a kilobyte, while most websites these days use megabytes. Well done!
You might want to add a more visible link to the repo on the page, the github banner in the corner is easy to miss.
Cool stuff otherwise, looks nice and clean. Although you have to be careful and make sure it always fits on the page (fallback to display on top on small screens for instance).