Add an equivalent example using the new Joystick API. Also add pin initializing code to Joystick::AddButton()

Joystick.cpp

@@ -21,7 +21,10 @@ void Joystick::Init() {
   if (_debug) Serial.println("DEBUG: Joystick library initialized.");
 }
 
-void Joystick::AddButton(uint8_t pin, ButtonType type) {
+void Joystick::AddButton(uint8_t pin, ButtonType type, bool pullup) {
+  if (pullup) pinMode(pin, INPUT_PULLUP);
+  else pinMode(pin, INPUT);
+  
   _buttons[_num_buttons].pin = pin;
   _buttons[_num_buttons].type = type;
   _buttons[_num_buttons].last_state = digitalRead(pin);

Joystick.h

@@ -31,7 +31,7 @@ class Joystick {
     void Init();
     void Update();
     
-    void AddButton(uint8_t pin, ButtonType type);
+    void AddButton(uint8_t pin, ButtonType type, bool pullup=false);
     void AddAxis(uint8_t pin);
     
     // These functions are deprecated and may become private in a future

examples/switch_panel.ino

@@ -2,6 +2,9 @@
 // In this example, we have 5 toggle switches that are configured
 // as double-action pulsed buttons - that is, whenever they are toggled, they
 // emit a short button press.
+//
+// This example uses the *old* Joystick API. You should strongly prefer the
+// other, better examples in this directory!
 
 #include <Joystick.h>
 

examples/switch_panel_improved.ino

@@ -0,0 +1,22 @@
+// This is the same 5-toggle-switch example from switch_panel.ino, using the
+// new API. So much easier!
+
+#include <Joystick.h>
+
+Joystick joystick;
+
+void setup() {
+  pinMode(13, OUTPUT);
+  digitalWrite(13, LOW);
+  
+  joystick.Init();
+  joystick.AddButton(2, BUTTON_PULSED_DOUBLE_ACTION, true);
+  joystick.AddButton(3, BUTTON_PULSED_DOUBLE_ACTION, true);
+  joystick.AddButton(4, BUTTON_PULSED_DOUBLE_ACTION, true);
+  joystick.AddButton(5, BUTTON_PULSED_DOUBLE_ACTION, true);
+  joystick.AddButton(6, BUTTON_PULSED_DOUBLE_ACTION, true);
+}
+
+void loop () {
+  joystick.Update();
+}