Transparent overlay of sea ice data is half-working, but not positioned correctly.
XYZ sea ice TileCache layer is half-working, but is way too big. At least it stays attached to the base map when zooming in and out now.
adds R script for translating source data, example generated GeoTIFF
adds working TileCache WMS OpenLayers example
fix jslint issues
Merge pull request #3 from ua-snap/overlay

Demonstration of basic WMS overlay works, so we're merging this into master and building up from there.