Merge pull request #1 from johnnyr/patch-1

fix max endstop pins

Marlin/pins.h

 #define X_STEP_PIN 37
 #define X_DIR_PIN 48
 #define X_MIN_PIN 12
-#define X_MAX_PIN 19
+#define X_MAX_PIN 24
 #define X_ENABLE_PIN 29
 #define X_MS1_PIN 40
 #define X_MS2_PIN 41
 #define Y_STEP_PIN 36
 #define Y_DIR_PIN 49
 #define Y_MIN_PIN 11
-#define Y_MAX_PIN 18
+#define Y_MAX_PIN 23
 #define Y_ENABLE_PIN 28
 #define Y_MS1_PIN 69
 #define Y_MS2_PIN 39
 #define Z_STEP_PIN 35
 #define Z_DIR_PIN 47
 #define Z_MIN_PIN 10
-#define Z_MAX_PIN 15
+#define Z_MAX_PIN 30
 #define Z_ENABLE_PIN 27
 #define Z_MS1_PIN 68
 #define Z_MS2_PIN 67