I would really prefer not to for a few reasons.
One of the biggest is that saving is unreliable when locally hosted. I can't explain why but from what I have read its a hard limitation. I don't have the code skills to make actual save "files" yet.
I also don't feel comfortable having the whole game engine downloaded. Its a foolish pride in it I suppose. Especially since anything on a webpage is technically downloaded anyway.
How about this for a question... why would you want it downloadable? Is there a benefit to that which I am missing? Or is it simply to have a backup?
Depending on the answer I may actually consider it.