Phase II tasks

[erfannoury]

• Make sure all the required functions are in the code somewhere
• Modify the score function to add back points in two ways. -75 if the player's guess is equal or close to the true rule (see directions for how close is allowed) -25 if the player guessed the correct rule AND was the one who ended the game (that's what the extra parameter is about).
• Update the readme to explain exactly how to run our modified code (apparently the TA wants this).
• Make sure it all runs

[erfannoury]

b4db8f7 implements these.