How To run
#get the dependencies
mix deps.get
#for test
mix test
#run the app
iex -S mixiex(4)> left_hand = "Black: 2H 2D 5S 5C KD"
"Black: 2H 2D 5S 5C KD"
iex(5)> right_hand = "White: 2D 5H 6S 7D 2C"
"White: 2D 5H 6S 7D 2C"
iex(6)> PokerPlay.best_hand(left_hand,right_hand)
"Black wins - two pairs"