fix to the riot control example
fix to the riot control example

chetanism/riot,ListnPlay/riotjs,sylvainpolletvillard/riot,joshcartme/riot,a-moses/riot,xtity/riot,zawsx/js-lib-webcomponents-react-riot,seedtigo/riot,a-moses/riot,ListnPlay/riotjs,dp-lewis/riot,AndrewSwerlick/riot,stonexer/riot,scalabl3/riot,crisward/riot,thepian/riot,rthbound/riot,chetanism/riot,antonheryanto/riot,GerHobbelt/riotjs,mike-ward/riot,beni55/riot,AndrewSwerlick/riot,marcioj/riot,noodle-learns-programming/riot,rasata/riot,dp-lewis/riot,seedtigo/riot,scalabl3/riot,rasata/riot,laomu1988/riot,tao-zeng/riot,ttamminen/riotjs,davidmarkclements/riot,txchen/riotjs,GerHobbelt/riotjs,duongphuhiep/riot,dschnare/riot,madlordory/riot,xieyu33333/riot,antonheryanto/riot,daemonchen/riotjs,sylvainpolletvillard/riot,xieyu33333/riot,marciojcoelho/riotjs,txchen/riotjs,joshcartme/riot,tao-zeng/riot,zawsx/js-lib-webcomponents-react-riot,thepian/riot,baysao/riot,ttamminen/riotjs,beni55/riot,muut/riotjs,mike-ward/riot,daemonchen/riotjs,noodle-learns-programming/riot,rthbound/riot,stonexer/riot,rsbondi/riotjs,baysao/riot,qrb/riotjs,davidmarkclements/riot,crisward/riot,laomu1988/riot,muut/riotjs,duongphuhiep/riot,marcioj/riot,marciojcoelho/riotjs,madlordory/riot,qrb/riotjs,rsbondi/riotjs,dschnare/riot,xtity/riot