Update grunt section for contributors
Update grunt section for contributors

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