[quadra-game/quadra] 733629: Update README.md

[GitHub]

Branch: refs/heads/master
Home: https://github.com/quadra-game/quadra
Commit: 7336291050fb58191ada486379e81b60353b438b
https://github.com/quadra-game/quadra/commit/7336291050fb58191ada486379e81b60353b438b
Author: Pierre Phaneuf <ppha...@gmail.com>
Date: 2014-09-01 (Mon, 01 Sep 2014)

Changed paths:
M README.md

Log Message:
-----------
Update README.md

Add a few missing Ubuntu packages, and fix up formatting a bit in places.