Testing jonnny-five button class with internal pull up resistor

hello-button.js

var five = require('johnny-five'),
    RaspiIO = require('raspi-io');

var board;

board = new five.Board({
      io: new RaspiIO(),
      repl: true
    });

 board.on('ready', function() {
      button = new five.Button({
        pin: 0,
        isPullup: true
      });

  var led = new five.Led(26);

  button.on('press', function () {
    console.log('press');
    led.on();
  });

  button.on('release', function () {
    console.log('release');
    led.off();
  });

  button.on('hold', function () {
    console.log('hold');
    led.toggle();
  });

  this.repl.inject({ io: this.io, led: led, button: button });
});