Adding file structure (take 2)

Added placeholder text files so Github would stop being a deep.
Added finalized assets, removed placeholders
Adding assets
Added art to 1.1.1 and 1.1.2
Added fixed art to 1.1.1
Adding fixed assets
Added art to 1.1.3
Added art assets to 1.1.1 and 1.1.3

Encountered layering issues with 1.1.1
Added assets to 1.1.1, 1.1.2, 1.1.3
Merge branch 'master' of https://github.com/ifdm/siphon

Conflicts:
	Assets/Graphics/Art.meta
	Assets/Graphics/Art/boulder-robot.meta
	Assets/Graphics/Art/boulder-robot/boulder-robot_1000x1000.png.meta