polishing demo game

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/qrm@88 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
final commit on game (for now)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/qrm@89 edb9625f-4e0d-4859-8d74-9fd3b1da38cb