https://gist.github.com/benbalter/5858851
http://recology.info/2013/06/geojson/">R to GeoJSON
http://adamw523.com/toronto-geojson/">Toronto GeoJSON GitHub Implementation</a>
http://stackoverflow.com/tags/geojson/hot">Stackoverflow Hottest GeoJSON Answers</a>
http://stackoverflow.com/questions/14740705/difference-between-geojson-and-topojson">Difference Betwen GeoJSON and TopoJSON</a>