Added comments to the example script and removed some kartena-centric variable names.
Added comments to the example script and removed some kartena-centric variable names.

semone/Proj4Leaflet,kartena/Proj4Leaflet,SeaAroundUs/Proj4Leaflet,perliedman/Proj4Leaflet,semone/Proj4Leaflet,emacgillavry/Proj4Leaflet,kartena/Proj4Leaflet,SeaAroundUs/Proj4Leaflet,emacgillavry/Proj4Leaflet,azavea/Proj4Leaflet,perliedman/Proj4Leaflet,kartena/Proj4Leaflet