No sample can be run in local.

[maxmas]

There is no sample can be run in local.
Can you provide full examples like crosspop.in?

[disjukr]

Hmm.. have you tried to open croquispop.html? (already noticed in README.md)
It has almost of ui providing in Crosspop croquis without layer list.

And please consider some function(e.g. undo/redo) will not working since security policy if you just opening the file directly in your browser.

[dahlia]

@disjukr I think you should provide some tutorials and API references.