Updated script documentation
Updated script documentation

MetGIS/TileStache,TileStache/TileStache,Billups/TileStache,jbants/TileStache,jbants/TileStache,TileStache/TileStache,TileStache/TileStache,MetGIS/TileStache,MetGIS/TileStache,jbants/TileStache,Billups/TileStache,Billups/TileStache