Update README.md
updated screenshots
updated screenshots
ambient occlusion work started
removed ability to disable sky dome - too much code
ambient occlusion like a boss
tweaked ao
ambient occlusion tweaks
ambient occlusion tweaks
chunk boundary bug fixes
Merge branch 'master' of https://github.com/fogleman/Craft into mining_crafting

Conflicts:
	main.c
	server.py
	world.c

Conflicted more things and lots of stuff doesn't happy right now.