chore(travis): move coverage checker out of script step
chore(travis): move coverage checker out of script step

jayphelps/rxjs,martinsik/rxjs,SangKa/RxJS-Docs-CN,IgorMinar/RxJS,gluck/RxJS,martinsik/rxjs,robwormald/RxJS,robwormald/RxJS,kwonoj/RxJS,saneyuki/RxJS,ReactiveX/RxJS,martinsik/rxjs,adrianomelo/RxJSNext,RxJS-CN/RxJS-Docs-CN,elliotschi/rxjs,ReactiveX/RxJS,staltz/RxJSNext,trxcllnt/RxJS,gluck/RxJS,adrianomelo/RxJSNext,trxcllnt/RxJS,Brocco/RxJS,adrianomelo/RxJS-1,IgorMinar/RxJS,Igorbek/rxjs5,ReactiveX/RxJS,jayphelps/rxjs,ReactiveX/rxjs,Igorbek/rxjs5,adrianomelo/RxJS-1,benlesh/RxJS,Brocco/RxJS,figueredo/RxJS,kwonoj/RxJS,kwonoj/RxJS,kwonoj/RxJS,elliotschi/rxjs,ReactiveX/rxjs,saneyuki/RxJS,staltz/RxJSNext,staltz/RxJSNext,adrianomelo/RxJS-1,RxJS-CN/RxJS-Docs-CN,elliotschi/rxjs,gluck/RxJS,trxcllnt/RxJS,figueredo/RxJS,SangKa/RxJS-Docs-CN,Brocco/RxJS,RxJS-CN/RxJS-Docs-CN,trxcllnt/RxJS,staltz/RxJSNext,adrianomelo/RxJS-1,jayphelps/rxjs,benlesh/RxJS,adrianomelo/RxJSNext,SangKa/RxJS-Docs-CN,martinsik/rxjs,adrianomelo/RxJSNext,SangKa/RxJS-Docs-CN,jayphelps/rxjs,gluck/RxJS,benlesh/RxJS,elliotschi/rxjs,ReactiveX/rxjs,figueredo/RxJS,jayphelps/rxjs,Igorbek/rxjs5,RxJS-CN/RxJS-Docs-CN,benlesh/RxJS,Brocco/RxJS,ReactiveX/RxJS,robwormald/RxJS,robwormald/RxJS,Igorbek/rxjs5,ReactiveX/rxjs,figueredo/RxJS