Ember cli 0.0.46

@kagemusha for you, after #1 

This updates to ember cli version 0.0.46.

I wasn't able to get the rails server working properly (no `current_user` is set and I'm not sure how to log in, so GET localhost:3000/card_sets?public=true returns 401 unauthorized) so I am not 100% certain this all works properly. If you have the rails server up and running I would double-check it against that, first.