add some notes on building under visual studio
add some notes on building under visual studio

DentonW/DevIL,Agadoul/DevIL,Agadoul/DevIL,bcampbell/DevIL,DentonW/DevIL,bcampbell/DevIL,Agadoul/DevIL,bcampbell/DevIL,Agadoul/DevIL,DentonW/DevIL,DentonW/DevIL,Agadoul/DevIL,Agadoul/DevIL,DentonW/DevIL,bcampbell/DevIL,DentonW/DevIL,bcampbell/DevIL,bcampbell/DevIL