stefanpenner/ember-cli — pull request #2128 by bcardarella (2014-09-27 21:53:52+00:00)
Title: Allow addons to inject middleware into testem

This PR depends upon https://github.com/airportyh/testem/pull/410 being
accepted before it should be pulled in

Primarily the use case is with any addon that injects a middleware into
the ember server's, this will allow addon authors to also expose that
middleware through `ember test` if/when noted PR above is accepted by
@airportyh