Because both you & your demos are beautiful
Web Development is awesome & so is Open Source — contributing, sharing, creating. Why would you hide your work after you have invested a lot of time? Exactly, you probably wouldn't — so why do it unintentionally by having a small download link deep down on your page? People are annoyed by that, so let's work on it together.
It honestly doesn't take much — big, attention-grabbing buttons, which clearly link to a demo at the top of your page and you're all set. Since there is no page fold, I am not even going to use the term here. Some examples…
Very good. Captain Obvious loves you.