Bug in simple example, barcode part

[RobertKesseler]

Expected Behavior

Add pass to wallet

Actual Behavior

Error Message, cant open on iPhone

There is an error in example.php of the simple example, seems to be the barcode part

'barcode' => [
        'format' => 'PKBarcodeFormatQR',
        'message' => 'Flight-GateF12-ID6643679AH7B',
        'messageEncoding' => 'iso-8859-1',
    ],

I replaced it with the part from flight ticket example and it works.

[tschoffelen]

Thanks for spotting this. Feel free to open a PR, happy to accept!