Added public domain notice

build/shared/examples/Communication/PhysicalPixel/PhysicalPixel.pde

@@ -18,6 +18,8 @@
  modified 14 Apr 2009
  by Tom Igoe and Scott Fitzgerald
  
+ This example code is in the public domain.
+
  http://www.arduino.cc/en/Tutorial/PhysicalPixel
  */
 
@@ -59,6 +61,8 @@ void loop() {
  // based on examples by Casey Reas and Hernando Barragan
  // modified 18 Jan 2009
  // by Tom Igoe
+ // This example code is in the public domain.
+
  
  
  import processing.serial.*;