Version 0.1 ^ updated the material selection gui

~ the material selection gui is now a lot more organized
~ spring no longer generates water that replaces everything around it.

Things that I did specifically for the release:
+ game icon.
+ first release and zip and 7z files
+ HOW TO PLAY.txt
+ Version 0.1 notes.txt
^ reworked the default materials so that water pours through earth and onto plan root.