Markdownify, and update the WIN32 install instructions
Fix some markdown formatting issues
Fix the Extra-libraries modification
Fix paths for x86_64 and i686 versions of SDL2
Fix paths, and remove explicit directions about SDL2main
Update SDL.cabal for the renamed WIN32 instructions
Add SDL2main as an extra library when on  windows
Merge pull request #10 from elliottt/master

Updated WIN32 instructions