Superhero top-trumps.

1. Run bundle install
2. Ensure that the super_trumps script is executable, with chmod +x super_trumps if necessary
3. Play the game with ./super_trumps

A game has:

• 2 Players. Player 1 is the human being and Player 2 is the computer ('The Machine').

• one deck of Cards

• many Turns.

Each Card has:

• a #character such as 'Catwoman' or 'Wonder Woman'

• a number of attributes such as agility or fighting_skills, each of which has a numeric value

Each Player has:

• a 'hand', the cards in her current possession

• a #current_card, being the one which is currently in play, i.e. it is top of the stack, face up.

A Turn is when:

• the winner of the previous turn is the current 'challenger'

• this challenger reviews the attributes of her current_card and #battles_with(attribute) the chosen attribute. e.g. my current card is Wonder Woman and I decide to battle with her agility value of 72.

• the player with the highest value in the attribute under challenge is the winner and wins his opponent's card. e.g. Catwoman's agility turns out to be 83, so in this case 'The Machine' is the winner and I have to give up my Wonder Woman card.

The game is the 'main' element of this program. Its lifecycle is:

1. created with name of the human known as player_1
2. imports cards
3. shuffles pack
4. deals cards
5. goes into a loop of Turns until a winner emerges
6. shows the leader board of known players with their total scores (a win is worth 5 points)