Adding basic descriptions of Items and Weapon.
Adding the activate function to the Item class.
Adding the HUD representation member...

Just don't expect it to do much right now...
Added a helper function to find direction.

Basically you pass in an angle or vector and the function tells you what
of the 8 directions that direction is. It returns a value of the Direction
enumeration. The enumeration is defined as follows:

public enum Direction
{
    forward, forwardLeft, Left, backLeft, back, backRight, Right,
    forwardRight
}
Changing Bullet to use the new helper function.

Hopefully this is the last time I have to change the directional logic of
the bullet class.