ensure native line endings on generated files

[bil-bas]

All these files have non-standard line endings on Windows (presumably being created on OSX). This means they display incorrectly in dumb Windows apps like Notepad, but is very easy to fix. Load then save the files as text files when generating them, rather than copying the files out of the gem, to ensure they have native endings. This way you don't need to ensure the checked in files have "safe" line endings.

src/actors/player.rb
src/demo_stage.rb
spec/helper.rb
boot/boot.rb
boot/game.yml