get something basic working with testing helpers.
refactor to only depend on AV#raw method.
extract helper class independant of rails.
invert relationship between helper and rails wrapper.
refactor new helpers class.
move knowledge of asset pipeline into Rails wrapper.
this was just to help tests.
simplify acceptance spec.
test helpers and rails wrapper separately.
split acceptance test into two unit tests.
use ember-rails-assets for digests in production.
release v0.3.0.