Pause screen and mute toggle

Added a transparent gray over-layer that I'll use for a few screens.
Implemented a pause screen and music-mute toggle. Updated the README to match.
I plan to redo the Instructions and Credits screens with the new transparency layer.
Massive Screen Redux

Updated the hell out of the main screen system. Looks much more modern now. Works very nicely.
Also added Orders and Info pages to the main game. The loop back and forth and should not interfere with each other.
Info screen (same in both places) has systems mapped out. It awaits text.
Remapped some keys and updated the README to match all changes.
Updated Events and Main sections to have all-caps system names, to match the format.
changed Index - Copy.html to baked.html, which is in the gitignore.
Added "Dayum Shame cat" back in with a 2% chance to proc upon failing the game.
Merge branch 'Screens+'

Conflicts:
	lib/game/main.js