Change roulette to use a 6 shooter rather than a jammed automatic

[mattdees]

The random # generator in the roulette implementation is crap.

As follows it should:

generate a random number (between 0-6) at the beginning of the round set a counter to 0 for each pull of the trigger, increment the counter if counter eq random # - BANG

[HoustonDad]

Completed in 1bf34485167aa21a0d8c86e3decfff682d487c6c