SDLJoytest -- Beta release

Morning all, Samuel here with a new beta release of SDLJoytest
New fetures / fixes include :
*Fixed the “button light” bug where too many buttons would cause the lights to
go off screen.
*Expanded the Makefile to include ‘install’ and ‘uninstall’ targets.
*Expanded the README file.
*Minor bug fixes.
*Modularized the code.

that’s about it. please do your best to destroy it and make it do bad things.
(so that I can fix them)

Thanks all.