update Gruntfile
update Gruntfile

magicdawn/ractive,thomsbg/ractive,Rich-Harris/ractive,squaredup/ractive,pingjiang/ractive,npmcomponent/RactiveJS-Ractive,cgvarela/ractive,cgvarela/ractive,Rich-Harris/ractive,magicdawn/ractive,ractivejs/ractive,thomsbg/ractive,JonDum/ractive,marcalexiei/ractive,aliprogrammer69/ractive,marcalexiei/ractive,cgvarela/ractive,thomsbg/ractive,ndimas/ractive,squaredup/ractive,heavyk/ractive,marcalexiei/ractive,ractivejs/ractive,heavyk/ractive,p0lax/ractive,ndimas/ractive,Rich-Harris/ractive,npmcomponent/RactiveJS-Ractive,aliprogrammer69/ractive,dyx/ractive,ISNIT0/ractive,ndimas/ractive,dyx/ractive,pingjiang/ractive,aliprogrammer69/ractive,JonDum/ractive,p0lax/ractive,ISNIT0/ractive,ISNIT0/ractive,JonDum/ractive,dyx/ractive,pingjiang/ractive,squaredup/ractive,heavyk/ractive,ractivejs/ractive,magicdawn/ractive