use latest grunt-contrib-testem to fix issue that it seems only watch Gruntfile change
use latest grunt-contrib-testem to fix issue that it seems only watch Gruntfile change

mtian/ember-app-kit-azure,Anshdesire/ember-app-kit,mtian/ember-app-kit-azure,stefanpenner/ember-app-kit,shin1ohno/EmberAppKit,Anshdesire/ember-app-kit,stefanpenner/ember-app-kit