Make about.php a little more readable
Rely on Garden's autoloader for bringing classes and rules into scope

The Yaga rule interface as well as the static super class can be auto-
magically brought into scope using Garden's autoloader instead of being
manullay included where needed.

I also renamed `lib` to `library` as this is used everywhere else in
Vanilla and moved the rules into the `library` dir to keep everything
in the same place.
Kill off any and all trailing whitespace
Temporarily remove README
Resurrect README with corrected case

Uppercase informational markdown filenames (README.md, CONTRIBUTING.md,
LICENSE.md, etc.) are simply the standard.
Add license to repository root
Merge pull request #2 from kasperisager/develop

Utilize the autoloader for the super class and rule interface