[importer] Add comment to stub responses in Downloader spec
[importer] Add comment to stub responses in Downloader spec

thorncp/cartodb,thorncp/cartodb,DigitalCoder/cartodb,bloomberg/cartodb,nuxcode/cartodb,UCL-ShippingGroup/cartodb-1,CartoDB/cartodb,future-analytics/cartodb,bloomberg/cartodb,UCL-ShippingGroup/cartodb-1,UCL-ShippingGroup/cartodb-1,codeandtheory/cartodb,raquel-ucl/cartodb,raquel-ucl/cartodb,thorncp/cartodb,raquel-ucl/cartodb,DigitalCoder/cartodb,DigitalCoder/cartodb,raquel-ucl/cartodb,codeandtheory/cartodb,codeandtheory/cartodb,nyimbi/cartodb,nyimbi/cartodb,future-analytics/cartodb,codeandtheory/cartodb,UCL-ShippingGroup/cartodb-1,future-analytics/cartodb,nuxcode/cartodb,bloomberg/cartodb,nyimbi/cartodb,splashblot/dronedb,CartoDB/cartodb,DigitalCoder/cartodb,nyimbi/cartodb,splashblot/dronedb,dbirchak/cartodb,future-analytics/cartodb,splashblot/dronedb,DigitalCoder/cartodb,splashblot/dronedb,dbirchak/cartodb,nuxcode/cartodb,CartoDB/cartodb,nuxcode/cartodb,thorncp/cartodb,raquel-ucl/cartodb,CartoDB/cartodb,bloomberg/cartodb,UCL-ShippingGroup/cartodb-1,nuxcode/cartodb,dbirchak/cartodb,bloomberg/cartodb,dbirchak/cartodb,nyimbi/cartodb,splashblot/dronedb,dbirchak/cartodb,future-analytics/cartodb,thorncp/cartodb,CartoDB/cartodb,codeandtheory/cartodb