Save the photo to disk

Returns a Promise that resolves to a string containing the filepath to the photo.

<CameraView ux:Name="Camera" />
<JavaScript>
    Camera.capturePhoto()
        .then(function(photo) {
            photo.save()
                .then(function(filePath) {
                    photo.release();
                })
                .catch(function(err) {
                    photo.release();
                })
        })
        .catch(function(err) { });
</JavaScript>