Set up travis

[apfelbox]

Follow up for #588.

Somebody with access to the prism repository should set up a travis account. As I already created the .travis.yml everything should be prepared, so we just need somebody to actually link this repo to travis.

You only have to add the repository to your travis account and everything should automagically be set up by travis and Github, so no further configuration needed.

@LeaVerou can you look into this? Should only be a matter of minutes.

PS: I already have successfully set it up for my fork.

[LeaVerou]

On it.

[LeaVerou]

So I enabled Travis on this repo, but nothing seems to trigger a build. Any ideas?

[apfelbox]

Was fixed in the meantime 🎉