Wire up Scan button in Xamarin.Web.BarcodeSample app

gistfile1.js

<script type="text/javascript" src="~/scripts/mt.js"></script>
<script type="text/javascript">
    $(document).ready(function () {
        // listen for scan finished event triggered from native code.
        Mt.App.addEventListener('scanComplete', function (data) {
            if (data && data.code) {
                if (confirm('Use the code ' + data.code + '?')) {
                    $('#PromoCode').val(data.code);
                }
            }
        });

        $('#scanBarcode').on('click', function (e) {
            e.preventDefault();

            // fire event in native code.
            Mt.App.fireEvent('scanBarcode', {});
        });

    });
</script>