foo.js

var states = [
      'showingAddRelative',
      'showingForm',
      'showingComplexRelationshipHelp',
      'findingExistingRelatives',
      'choosingNewOrExisting',
      'addingRelative',
      'gettingSuggestions',
      'showingSuggestions',
      'approvingSuggestions',
      'requestingInvitationTemplate',
      'showingInvitationTemplate',
      'sendingInvitation',
      'findingExistingRelatives',
      'idle'
      ], lol = new Object();

for (state in states) {
  lol[state] = Ember.State.create({});
}

App.AddRelativeManager = Ember.StateManager.create(lol);