code: func NewDriver(connection *Adaptor) *Driver {
  	d := &Driver{
  		name:       gobot.DefaultName("ARDrone"),
  		connection: connection,
  		Eventer:    gobot.NewEventer(),
  	}
  	d.AddEvent(Flying)
  	return d
  }
docs: // NewDriver creates an Driver for the ARDrone.
  //
  // It add the following events:
  //     'flying' - Sent when the device has taken off.