Use jquery event objects
Added code comments
Implemented worldToDisplay for the simpleRenderer
Renamed simpleRenderer to vglRenderer as it makes more sense
Updated API name to be more specific
Merge remote-tracking branch 'origin/update_osm_layer_new_api' into new_api
Merge remote-tracking branch 'origin/new_api' into d3_api

Conflicts:
	CMakeLists.txt
fix event argument on pan
fix event argument on pan
Merge branch 'new_api' into d3_api
bug fix in core/layer.js