Recently I stumbled across a blog posting detailing recent open source JavaScript projects Esri has been working on. [http://blogs.esri.com/esri/arcgis/2013/07/31/new-esri-open-source-javascript-projects-leaflet-geoservices-js-terraformer-pushlet/]  Although all of the projects are interesting in their own right, the one really catching my attention is the Esri-Leaflet [https://github.