Add ability for services to return a promise instead of a callback

[daffl]

If a service returns a Promises/A+ Promise and the callback isn't called, the promise should be used to resolve the request.

var todoService = {
  todos: [],

  // Return all todos from this service
  find: function(params) {
    return Q(this.todos);
  }
}

[Glavin001]

+1

[pspeter3]

This would be awesome.

[lock]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue with a link to this issue for related bugs.