code: function(t, b, c, d) {
              if(t < d / 2) {
                  return Kinetic.Easings.BounceEaseIn(t * 2, 0, c, d) * 0.5 + b;
              }
              else {
                  return Kinetic.Easings.BounceEaseOut(t * 2 - d, 0, c, d) * 0.5 + c * 0.5 + b;
              }
          }
docs: bounce ease in out
  @function
  @memberof Kinetic.Easings