update babel-preset-es2015 to version 6.22.0
update babel-preset-es2015 to version 6.22.0

sebastiencs/lounge,metsjeesus/lounge,FryDay/lounge,rockhouse/lounge,libertysoft3/lounge-autoconnect,ScoutLink/lounge,realies/lounge,williamboman/lounge,FryDay/lounge,MaxLeiter/lounge,williamboman/lounge,thelounge/lounge,sebastiencs/lounge,realies/lounge,rockhouse/lounge,libertysoft3/lounge-autoconnect,ScoutLink/lounge,MaxLeiter/lounge,ScoutLink/lounge,MaxLeiter/lounge,metsjeesus/lounge,williamboman/lounge,sebastiencs/lounge,FryDay/lounge,thelounge/lounge,rockhouse/lounge,realies/lounge,libertysoft3/lounge-autoconnect,metsjeesus/lounge