I think the work done here is fansastic and presents a great alternative to the zurb joyride / jquery or zepto combination. I agree with some of the other comments about the usability on an ipad and mobile device as well as scrolling the screen to the focused element. I think larger targets would really help with this.
At this point in its development, if you are able to use jQuery or Zepto I think that Joyride 2 offers a much better UI / UX especially if you are planning to use Foundation 3/4.