Register modal component via initializer so it can be looked up later by the container.
Register modal component via initializer so it can be looked up later by the container.

Fixes #89

ritesh83/bootstrap-for-ember,ember-addons/bootstrap-for-ember,ritesh83/bootstrap-for-ember,rpharrison/bootstrap-for-ember,rpharrison/bootstrap-for-ember,duereg/bootstrap-for-ember