Contact Lens Case, part 3. Animate the cap opening.

In part 3, we look at using a Skeleton object to pose and animate the opening of the cap.

Part 1 is here: https://www.strata.com/university/tutorials/contact-lens-case-part-1/
Part 2 is here: https://www.strata.com/university/tutorials/contact-lens-case-part-2/