Fix Ember Canary Build

This PR does three things:

 1. make the `make` output a little nicer by hiding intermediary commands and using `echo` to output nice status messages
 1. change `script/run` to exit with status 1 if the tests fail. A TranslateableAttributes test has been failing for a while, but Travis wasn't reporting failures because `script/run` always exited with status 0.
 1. fix the TranslateableAttributes tests on Ember Canary. Ember Canary's `{{view}}` helper no longer assumes `Ember.View` as the default view class; instead, it asks the container (which the spec didn't set up) for `view:default`.

cc @locks @rwjblue @workmanw
It's passing locally and in Travis, but if that's no longer the "right" way to do things, we could change the `renderTemplate` helper to create an `Ember.Container` and register a `view:default` in it.