Simpler demo pages

[tacman]

This looks like a great library, thanks for releasing it.

I'm trying to run it in my own site, and am missing something basic. I've cut-and-paste the demo HTML, and am initializing the library, but probably improperly.

Would you consider moving the demos to their own pages? So it's super-simply to copy. The current demo page obviously has a lot of content, and it's hard (for me) to figure out what's needed to create the various demos. That is, a /simple-gallery.html, /gallery-with-description.html, gallery-via-api.html.

Thanks.