anchor.diff: -= GPIO
  +== GPIO
   
   This is a Java API library to access the GPIO ports of a Beagleboard Black.
   
  
positive.code:     Thread.sleep(1000);
  }
  pin.low();
  ---
  
  Example for reading and waiting for pin value change:
  [source,java]
  
negative.code: 
  Example for blinking an LED:
  [source,java]
  Gpio gpio = new Gpio(new BeagleboneGpioFactory());
  BinaryOutputPin pin = gpio.binaryOutputPin(BeagleboneGPio.P9_12);
  for (int i=0; i<10; i++) {
  