bootstrap@4.0.0-beta install issue for the Ember js

Im try to installbootstrap@4.0.0-beta for the Ember js application im used following method npm install bootstrap@4.0.0-beta,but its not work for my projects, anyone know how to install correctly Ember js for the bootstrap@4.0.0-beta

Boostrap 4 beta> http://ift.tt/PPrDZs

Thanks