Merge pull request #2 from karlb/master

Basic GUI elements and show moves when taking pieces
added default.css
main.js fix
added bootstrap
added target-densitydpi=medium-dpi for hi-res devices; increased button sizes
add rules to html (not shown, yet)
Put game state into URL
Merge remote-tracking branch 'upstream/master'

Conflicts:
	www/index.html
proper resizing in browser
detect draw games
Add license file; move cssshake styles into css file
ignore invalid moves for undo stack