Fix failing build test issue#71

[nelsonic]

fixes #71 (failing build due to URL change...)

[nelsonic]

Tests pass:

And yet CodeShip reports them as failing... 🤣 / 😠

[nelsonic]

Zero indication of why there's an npm ERR! ...
both tests are clearly passing.

I feel like I'm pretty much done with Nightwatch at this point.
Back to writing Elm!!

[nelsonic]

@iteles this test passes on localhost and there is no indication as to why it is failing on CodeShip. In the interest of making the tutorial useful again, please consider merging this PR so that people running it on their localhost will not see an error. thanks.

[iteles]

@nelsonic These tests are all passing locally for me too and I can't seem to figure out what's up with codeship.
Will be merging as per #72 (comment)