readme tweaks
readme tweaks

jgravois/Leaflet.ShapeMarkers,kneemer/Leaflet.ShapeMarkers,Esri/Leaflet.ShapeMarkers,jgravois/Leaflet.ShapeMarkers,kneemer/Leaflet.ShapeMarkers,Esri/Leaflet.ShapeMarkers,jgravois/Leaflet.ShapeMarkers,Esri/Leaflet.ShapeMarkers,kneemer/Leaflet.ShapeMarkers