Housekeeping:
	Let's improve our shader loading routine
	1.  open/read/close is unix-specific
		fopen/fread/fclose works better for Windows
		fseek/ftell/rewind to figure out file size
		malloc 
			Couldn't we just use fstat?
	2.  Compilation errors
		Query, and bail out if we didn't build it
		example_engine has an example here
	3.  We can make a helper function for this

Textures!
	A texture is an image applied to an object
	It allows more detailed specification of colors
	If you didn't need fancy colors, you don't need these

Simple and straitforward textures:
	Just a picture applied to something
	Some of you did this in Blender
	Same idea basically

Texture coordinate system
	Model coordinates are x, y, z
	Texture coordinates use u and v
		Range is 0.0 to 1.0
	Make these coordinates is called uv mapping
		Easy for a cube
		Not as easy for other shapes!

To put a texture on an object, we need:
	Model vertices (like before)
	Texture coordinates
	An actual texture
	We don't need colors if we're using textures
		No reason to waste memory, it's expensive!
	Remember to use glActiveTexture and glBindTexture when drawing