renamed player to players, correct kill position used in gameover, corrected score, MAX_PLAYERS moved to config

TWANG32/Enemy.h

@@ -1,4 +1,5 @@
 #include "Arduino.h"
+#include "config.h"
 
 class Enemy
 {
@@ -9,7 +10,7 @@ class Enemy
     bool Alive();
     int _pos;
     int _wobble;
-    int playersSide[4]; // This should be MAX_PLAYERS
+    int playersSide[MAX_PLAYERS];
   private:
     int _dir;
     int _speed;