Replaced Osmosis with osmfilter - http://wiki.openstreetmap.org/wiki/Osmfilter
It seems to be a faster replacement and have better support for OSM element dependencies.

Added a map using leafletjs to render generated osm for better data visualisation (with leaflet-osm plugin)

FIXME: leaflet-osm plugin is iffy right now, not robust with datasets with missing node refs. Have a more forgiving version, will fork soon