Fix simulation end

adjusted location of the Console.ReadLine() so that user doesn't have to press enter after the last generation to end the program

Program.cs

@@ -109,9 +109,10 @@ static void Main(string[] args)
                 {
                     Console.WriteLine();
                     Console.WriteLine("Press enter to display the next generation");
+                    Console.ReadLine();
                 }
-                Console.ReadLine();
             }
+            Console.WriteLine();
             Console.WriteLine("The simulation has ended.");
             //Test test = new Test();
         }