sdl-sd-alg engine v1.1

The first release of our game engine.
Features:

• enemy (zombie, semi-smart "AI")
• inventory
• items
• armour
• Added a Makefile for Linux and installation instructions.

sdl-sd-alg engine v1.0

The first release of our game engine.
Features:

• enemy (zombie, semi-smart "AI")
• inventory
• items
• armour