message: docs: add async localization example
diff: # Localized Messages
  -You may want to display error messages in different languages. `vee-validate` offers a flexible multi-language support. Here is an example on how you may do that.
  +You may want to display error messages in different languages. `vee-validate` offers a flexible multi-language support.
  -The language below is Arabic (RTL):
  +Here you can find two examples.
  +
  +## Simple Localization
  <iframe src="https://codesandbox.io/embed/y3504yr0l1?initialpath=%2Flocale&module=%2Fsrc%2Fcomponents%2FLocale.vue&view=preview" style="width:100%; height:500px; border:0; border-radius: 4px; overflow:hidden;" sandbox="allow-modals allow-forms allow-popups allow-scripts allow-same-origin"></iframe>
  [![Edit VeeValidate Examples](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/y3504yr0l1?initialpath=%2Flocale&module=%2Fsrc%2Fcomponents%2FLocale.vue)
  +
  +## Localization with async loading of language files
  +
  +<iframe src="https://codesandbox.io/embed/rv6z4j7y4?module=%2Fsrc%2Fcomponents%2FDynamicLocale.vue" style="width:100%; height:500px; border:0; border-radius: 4px; overflow:hidden;" sandbox="allow-modals allow-forms allow-popups allow-scripts allow-same-origin"></iframe>
  +
  +[![Edit VeeValidate Examples](https://codesandbox.io/static/img/play-codesandbox.svg)](https://codesandbox.io/s/rv6z4j7y4?module=%2Fsrc%2Fcomponents%2FDynamicLocale.vue)
  