lib/joystick.js
function JoyStick(device){
  var self = this;
  Mouse.apply(this, arguments);
  this.on('data', function(ev){
    if(ev.type == InputEvent.EVENT_TYPES.EV_INIT){
      self.emit('init', ev);
    }
  });
}
function JoyStick(device){
  var self = this;
  Mouse.apply(this, arguments);
  this.on('data', function(ev){
    if(ev.type == InputEvent.EVENT_TYPES.EV_INIT){
      self.emit('init', ev);
    }
  });
}
[JoyStick description]
@param {[type]} device [description]