Added example sketches.

Changed debounce logic to subtract ms times.

Examples/SimpleOnOff/SimpleOnOff.pde

@@ -0,0 +1,44 @@
+/*----------------------------------------------------------------------*
+ * Example sketch for Arduino Button Library by Jack Christensen        *
+ *                                                                      *
+ * The simplest example. Using a tactile button switch to turn          *
+ * the Arduino's pin 13 LED on and off. Wire a switch from Arduino      *
+ * pin 2 to ground.                                                     *
+ *                                                                      *
+ * This work is licensed under the Creative Commons Attribution-        *
+ * ShareAlike 3.0 Unported License. To view a copy of this license,     *
+ * visit http://creativecommons.org/licenses/by-sa/3.0/ or send a       *
+ * letter to Creative Commons, 171 Second Street, Suite 300,            *
+ * San Francisco, California, 94105, USA.                               *
+ *----------------------------------------------------------------------*/
+
+#include <Button.h>        //https://github.com/JChristensen/Button
+
+#define BUTTON_PIN 2       //Connect a tactile button switch (or something similar)
+                           //from Arduino pin 2 to ground.
+#define PULLUP true        //To keep things simple, we use the Arduino's internal pullup resistor.
+#define INVERT true        //Since the pullup resistor will keep the pin high unless the
+                           //switch is closed, this is negative logic, i.e. a high state
+                           //means the button is NOT pressed. (Assuming a normally open switch.)
+#define DEBOUNCE_MS 20     //A debounce time of 20 milliseconds usually works well for tactile button switches.
+#define LED_PIN 13         //The standard Arduino "Pin 13" LED
+
+Button myBtn(BUTTON_PIN, PULLUP, INVERT, DEBOUNCE_MS);    //Declare the button
+boolean ledState;          //A variable that keeps the current LED status
+
+void setup(void)
+{
+    pinMode(LED_PIN, OUTPUT);    //Set the LED pin as an output
+}
+
+void loop(void)
+{
+    myBtn.read();                    //Read the button
+
+    if (myBtn.wasReleased()) {       //If the button was released, change the LED state
+        ledState = !ledState;
+        digitalWrite(LED_PIN, ledState);
+    }
+}
+
+