Walking animations in, working perfectly!

Added walking animations to spritesheet, coded in walking. I thought
only one health variable is better, more tidy.
Walking animations working

Walking animations working perfectly. Removed yer stinky health
variables and used player.getX() etc, by passing player into hud. Reason
was that I think we would need to change your health variable to my
health variable every tick which would waste resources, also if we ever
want multiplayer it'll make it that bit easier.