I added the goals to the Yahtzee game.

Checkpoint 3:
My experience working with OOP is that I understand most of it but is still a little confusing.  I wasn't able to figure out all of the goals for the game.  This is different than how I would have written the program in units 1 and 2 as I would have just made a bunch of functions and called them throughout my code.  Now we can use classes.

play.py

@@ -3,12 +3,22 @@ from yahtzee_goals import (
     GoalOnes, 
     GoalTwos, 
     GoalThrees,
+    GoalFours,
+    GoalFives,
+    GoalSixes,
+    GoalThreeofaKind,
+    GoalFourofaKind
 )
 
 goals = [
     GoalOnes(), 
     GoalTwos(),
     GoalThrees(),
+    GoalFours(),
+    GoalFives(),
+    GoalSixes(),
+    GoalThreeofaKind(),
+    GoalFourofaKind()
 ]
 
 game = Yahtzee(goals)