Added column "headerCssClass" option.
Added column "headerCssClass" option.

coatue/SlickGrid,gofflab/neuron-seq-site,Infowatch/SlickGrid,zartata/SlickGrid,gofflab/neuron-seq-site,lanwan/SlickGrid,JLynch7/SlickGrid,iCoreSolutions/SlickGrid,mtscout6/SlickGrid,dynamicaction/SlickGrid,FactLook/SlickGrid,fortesl/SlickGrid,GerHobbelt/SlickGrid,GerHobbelt/SlickGrid,msuchoi/Coffee,ekohe/SlickGrid,zamabraga/SlickGrid,doctor41/SlickGrid,codexp/SlickGrid,chrisghost/X-SlickGrid,manju-reddys/SlickGrid,tradingtechnologies/SlickGrid,GerHobbelt/SlickGrid,ekohe/SlickGrid,steelsojka/SlickGrid,benjaminRomano/bd-SlickGrid,coatue/SlickGrid,msuchoi/Coffee,helin16/SlickGrid,ceanota/SlickGrid,cheminfo/SlickGrid,pirasis-l/SlickGrid,csgsolutions/SlickGrid,SimplGy/SlickGrid,msuchoi/Coffee,mleibman/SlickGrid,Termato/SlickGrid,mindmatters/SlickGrid,manju-reddys/SlickGrid,vinicius5581/SlickGrid,songyaos/SlickGrid,coatue-oss/slickgrid2,trazyn/SlickGrid-mini,RobertoMalatesta/SlickGrid,yamass/SlickGrid,fortesl/SlickGrid,matrix1992/SlickGrid,dandy/SlickGrid,mleibman/SlickGrid,dandy/SlickGrid,cheminfo/SlickGrid,tradingtechnologies/SlickGrid,concord-consortium/codap-SlickGrid,ddomingues/X-SlickGrid,jiangzhixiao/SlickGrid,steelsojka/SlickGrid,Termato/SlickGrid,Revionics/SlickGrid,werture07/SlickGrid,redabakr/SlickGrid,chrisghost/X-SlickGrid,sonatype/SlickGrid,redabakr/SlickGrid,RobertoMalatesta/SlickGrid,mtscout6/SlickGrid,iCoreSolutions/SlickGrid,priyaaanand/SlickGrid,nagasudhirpulla/SlickGrid,zartata/SlickGrid,dynamicaction/SlickGrid,Infowatch/SlickGrid,dbirchak/SlickGrid,cheminfo/SlickGrid,msuchoi/Coffee,K2InformaticsGmbH/SlickGrid,sonatype/SlickGrid,coatue-oss/slickgrid2,matrix1992/SlickGrid,jesenko/SlickGrid,cjsigler/SGrid,FactLook/SlickGrid,TedDBarr/SlickGrid,songyaos/SlickGrid,helin16/SlickGrid,yamass/SlickGrid,peaceboy/SlickGrid,codexp/SlickGrid,csgsolutions/SlickGrid,Celebio/SlickGrid,Medisapiens/SlickGrid,jiangzhixiao/SlickGrid,gbark/SlickGrid,peaceboy/SlickGrid,ceanota/SlickGrid,thationothe/SlickGrid,pandell/SlickGrid,werture07/SlickGrid,coatue/SlickGrid,gofflab/neuron-seq-site,priyaaanand/SlickGrid,6pac/SlickGrid,JonBons/SlickGrid-DraggableGrouping-SummaryFooters,nagasudhirpulla/SlickGrid,mindmatters/SlickGrid,lgsunnyvale/eFinancialModel,dbirchak/SlickGrid,doctor41/SlickGrid,varunkumar/slickgrid-mleibman,jesenko/SlickGrid,pandell/SlickGrid,gofflab/neuron-seq-site,vinicius5581/SlickGrid,TedDBarr/SlickGrid,zamabraga/SlickGrid,Revionics/SlickGrid,thationothe/SlickGrid,SimplGy/SlickGrid,trazyn/SlickGrid-mini,lanwan/SlickGrid,6pac/SlickGrid,ddomingues/X-SlickGrid,benjaminRomano/bd-SlickGrid