Typo in README

[JonasMunck]

The comment //It's optional, 'loading'by default. is (as far as I can see) wrong, default vuex module is wait.

new Vue({
  el: '#app',
  store,
  wait: new VueWait({
    useVuex: true, // You must pass this option `true` to use Vuex
    vuexModuleName: 'vuex-example-module' // It's optional, `loading` by default.
  }),
});

[f]

You can fix it and open a PR or I'll? Which one do you prefer? :)

[JonasMunck]

I can do it :)