Add dots reporter to karma run on TravisCI.
Add dots reporter to karma run on TravisCI.

Joris-van-der-Wel/DOMPurify,tdeekens/DOMPurify,neilj/DOMPurify,tdeekens/DOMPurify,neilj/DOMPurify,tdeekens/DOMPurify,neilj/DOMPurify,Joris-van-der-Wel/DOMPurify,Joris-van-der-Wel/DOMPurify