Makefile fix: continue even if nothing to commit in gh-pages
Makefile fix: continue even if nothing to commit in gh-pages

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