Update docs/assignments/week08.md, docs/images/week08/full_leds.gif, docs/images/week08/IMG_9392.jpg, docs/images/week08/IMG_9396.jpg, docs/images/week08/IMG_9395.jpg, docs/images/week08/colorled2.gif, docs/images/week08/metal.gif, docs/images/week08/metal1.gif, docs/images/week08/IMG_9441.jpg, docs/images/week08/IMG_9440.jp2, docs/images/week08/IMG_9411.jpg, docs/images/week08/IMG_9442.jpg, docs/images/week08/IMG_9399.jpg, docs/images/week08/IMG_9397.jpg