Add useful example for the `getData` method

[ilfa]

In the example below we show how to call the getData method but don't afford any useful scenarios of what we can do with that data.
We need to add a better scenario to the documentation.

<form
  onSubmit={(e) => {
    e.preventDefault()
    getData().then((data) => {
      if (data) {
        // do something with the visitor data
        // for example, append visitor data to the form data to send to your server
        console.log(data)
      }
    })
  }}
>

[JuroUhlar]

@ilfa Is this still relevant? I am not sure I can come up with something more meaningful than we already have without making the code snippet overly complicated and distracting from its main purpose.

We have a whole repository of useful examples, maybe we can just link to it somewhere?

[ilfa]

Nice idea! Could you add the link to the readme?

[JuroUhlar]

Done: bc055bc