OpenSeadragon SVG Overlays

OpenSeadragon: An open-source, web-based viewer for zoomable images, implemented in pure JavaScript, for desktop and mobile.
Raphaƫl: is a small JavaScript library that should simplify your work with vector graphics on the web.

After researching around, no one seemed to have posted a proper working OpenSeadragon/SVG overlay. Let's get these working together for some rich data overlay goodness: