Needs UI/UX improvement

[Paul Wackerow]

Ideas / notes:

• Clear output screen periodically to re-display current state of game
  Currently game gets cluttered with multiple lines showing the history of gameplay, ie:
  [3, 4] // Hit
  [3, 4, 8] // Hit
  [3, 4, 8, A] // Hit
  [3, 4, 8, A, 4] // Stay

• Another idea would be to display the current value of a hand:
  [6, A] (17)
  [6, A, 7] (14)
  This could also be made optional and declared as a boolean at the beginning of the game (some people may prefer more realistic approach where they have to calculate it themselves)

• Incorporate images for the cards (low priority)