Revert "Roll the Die - Game"

This reverts commit 1a9b3e545acc0b92de51c44db7117b030cb1d25d.
Roll the Die - Game

Simple game that is useful for anyone that is new to PHP. The game makes
use of if... else statements, shows how form submissions are handled,
and how data can be validated. Basically: input -> validate -> do
something with it -> display results to end user. This little game
follows a procedural approach.