Made Shader Optional
Added Tutorials
Added Tutorial03
Fixed subtle error
Minor fix with non-list uniforms
Changed tutorial to contain a Uniform example as well.
Removed the shader name as it's unnecessary.
Trying to make the examples work.
Added SDL Examples
Starting tutorial04
Getting closer to release
Fixed minor issue with radian and degrees
Update transform.lisp

Changed radians->degrees to a macro. Good catch samlamamma.
Finishing up the Tutorial04
Added with-mapped-texture
Switched from radians to degrees
Negated Light Direction
Update README.md
Added SDL Tutorial 4
what?