R: @addyosmani, whom I discussed this with out-of-band.
CC: @yyx990803, in case there are any concerns, specifically about the readiness of pointing people to `vue-cli` 3.0 as an alternative at this point.

I wanted to reflect the reality of the current state of this template, as the `pwa` template that ships with `vue-cli` is where our efforts will be devoted moving forward.

Fixes #190