game_spec.rb: Code review.

[scott-steadman]

Get rid of Game parameter in inner describes Reason: I believe it is redundant since you're already in a describe Game block.

[scott-steadman]

Refactor before(:each) into memoized getters. Reason: Prevent unnecessary object creation

Example Code:

def game
  @game ||= Game.new
end

[scott-steadman]

Remove the first test 'have a crib with four cards' Reason: It looks like the same methods are tested (better) in subsequent tests.