chore(travis): update travis configuration
chore(travis): update travis configuration

kwonoj/RxJS,ReactiveX/rxjs,martinsik/rxjs,trxcllnt/RxJS,jayphelps/rxjs,kwonoj/RxJS,benlesh/RxJS,ReactiveX/RxJS,jayphelps/rxjs,IgorMinar/RxJS,Brocco/RxJS,trxcllnt/RxJS,kwonoj/RxJS,benlesh/RxJS,ReactiveX/RxJS,benlesh/RxJS,kwonoj/RxJS,IgorMinar/RxJS,jayphelps/rxjs,benlesh/RxJS,jayphelps/rxjs,trxcllnt/RxJS,ReactiveX/rxjs,Brocco/RxJS,ReactiveX/rxjs,ReactiveX/rxjs,martinsik/rxjs,Brocco/RxJS,trxcllnt/RxJS,ReactiveX/RxJS,ReactiveX/RxJS,Brocco/RxJS,jayphelps/rxjs,martinsik/rxjs,martinsik/rxjs