Keep single player.rb file

[ryanb]

It is easy to accidentally edit the older player.rb file instead of the newer one when changing levels. It would be better to keep the player file the same and change the README file directly.

Is anyone concerned about losing the previous player files? One could keep it under version control if so. Alternatively I could copy a backup of each file when moving to the next level, but that might be messy.

I'm not sure how best to keep this backwards compatible so it upgrades smoothly. Need to investigate.

[ryanb]

changing directory structure for player profiles, this change is incompatible with earlier versions - closed by 7209b37