run as: gfoilhw4 <grid name>

Features: 
	Creates a 3d rendered terrain model built from a ASCASCII format 
	file. The user can render the terrain in outline or filled format
	and can cycle through a variety of color schemes. Furthermore, the user
	can increase or decrease the relative relief of the terrain, making 
	mountains look higher or smaller. Lastly, the user can move and rotate
	the terrain as well as the camera. 

Menu Options: 
	-available on right-mouse click
	-can choose to render in filled polygon or outline mode
	-can cycle through three color schemes

Keyboard Options: 
	q = quit
	w = toggle filled or outline mode
	e = change color scheme
	r = decreases the relief of the terrain
	R = increases the relief of the terrain
	t = resets the field of view
	> = decreases the resolution of the image
	< = increases the resolution of the image
	x, X = rotates the terrain in the positive/negative x-direction
	c, C = rotates the terrain in the positive/negative y-direction
	z, Z = rotates the terrain in the positive/negative z-direction
	s, S = moves the terrain in the positive/negative x-direction	
	d, D = moves the terrain in the positive/negative y-direction
	a, A = moves the terrain in the positive/negative z-direction

	b, B = moves the camera in the positive/negative z-direction
	rightArrow = rotates the camera right
	leftArrow = rotates the camera left
	upArrow = rotates the camera down
	downArrow = rotates the camera up