minor changes. Still in progress.

src/Player.java

@@ -444,6 +444,20 @@ public class Player {
     public void gameOver(){
         System.out.flush();
         System.out.println("Game over");
+    }
+
+    public boolean playAgain(){
+        Scanner input = new Scanner(System.in);
+        System.out.println("Would you like to play again? Y/N");
+        while(true){
+            String response = input.nextLine();
+            if(response.equalsIgnoreCase("Y")){
+                return true;
+            }else if(response.equalsIgnoreCase("N")){
                 System.exit(0);
+            }else{
+                System.out.println("That is not a valid input.");
+            }
+        }
     }
 }