It' says "a working example" - which we referenced. With "a screenshot as a bonus". And a screenshot is pretty pointless for a binding library, since it doesn't impact what the GUI looks like, so it's not surprising a simple example to show the code doesn't have one.
EDIT: i.e. after looking at the QML, from quick glance it'll render two lines of text and two buttons in QML default styling. What do you gain from that?