Continuous Integration, Dox & NPM deployment

[TomByrne]

I'd like to add CI and NPM builds to this repo, in line with the OpenFL and Starling repos.
I'm just having a little trouble working out how it actually works in those libraries.

I can see the CircleCI config, which seems to just be for docs.
I can also see the Travis config, which sets up a build environment, runs unit tests and builds js/ts version.
What I can't see is where it runs npm publish.
@jgranick, are you able to point me in the right direction?