merged pull request for converter bbox parameter
merged pull request for converter bbox parameter

faegi/osmbuildings,hgarnelo/osmbuildings,kekscom/osmbuildings,OSMBuildings/OSMBuildingsClassic,hgarnelo/osmbuildings,hgarnelo/osmbuildings,faegi/osmbuildings,kekscom/osmbuildings,OSMBuildings/OSMBuildingsClassic,faegi/osmbuildings