    vel.animateAlongPath(attrs, path)

Animate the element along the `path` SVG element (or Vectorizer object). `attrs` contain Animation Timing attributes describing the animation. The following example shows how to send a token along a JointJS link element:

    var c = V('circle', { r: 8, fill: 'red' });
    c.animateAlongPath({ dur: '4s', repeatCount: 'indefinite' }, paper.findViewByModel(myLink).$('.connection')[0]);
    V(paper.svg).append(c);