Modified readme: removed future development note about removing JQuery depdendency, and added thanks to contributors.
Modified readme: removed future development note about removing JQuery depdendency, and added thanks to contributors.

kozer/leaflet-tilelayer-geojson,nrenner/leaflet-tilelayer-vector,Livefyre/leaflet-tilelayer-geojson,ebrelsford/leaflet-tilelayer-vector,ebrelsford/leaflet-tilelayer-vector,glenrobertson/leaflet-tilelayer-geojson,jgimbel/leaflet-tilelayer-geojson