Adds a deck of cards.

They work like real cards, in Space!

Attack_hand() a deck of cards to pick one up. Attackby() a singular card on another to make a "hand of cards". 
Hit a "hand of cards" with a singular card, or hit a single card with a hand to add it to the hand.

When attack_self()'d, the "hand of cards" displays a prompt, showing you all the cards in the hand.Choosing a card will remove it from the "hand of cards" and put it in your open hand.

At any time you can hit a deck of cards with a singular card or a "hand" of cards to add them back to the deck.

The deck itself can be picked up and moved in the same way as the paper_bin.
While held a deck can be attack_self()'d to shuffle the cards. (now with that amazing shuffle sound... mmmm)

Hope you guys like it.

![cardgame](https://f.cloud.github.com/assets/2319040/1607370/8326960e-5482-11e3-8aef-90e0e505133a.png)