message: Make $.ajax a Promise
diff: @@ -17,7 +17,7 @@ module.exports = ($el, onSubmit = -> Promise.resolve()) ->
  .text 'Saving...'
  Promise.all [
  - $.ajax(
  + Promise $.ajax(
  url: $el.data('action')
  method: $el.data('method')
  data: serializer.data()
  