Add fastclick.js for quick response in touch browsers.
Remove public/js/lib from gitignore.

In a more serious project, I would use a more serious build process
which included third-party libraries as needed, but for now, just
tracking js/lib will be fine.
Make grid rows more compact for iPad formatting.
Update character health, damage amounts.
Damage selected player instead of their opponent.

This makes a lot of things more intuitive.