Run unit tests on TravisCI

[bahmutov]

@jonathanong could you enable the build for this repo on TravisCI please? https://travis-ci.org/profile/repo-utils - it would be very nice to auto test, and if there is a github and npm token we could even semantically release?

[jonathanong]

added you as an admin for this repo. you should be able to do it yoruself

[bahmutov]

Weird, still unable to flip

the switch

[jonathanong]

ugh. k enabling it

[bahmutov]

done