Update docs/images/week13/bioled2.gif, docs/images/week13/bioled3.gif,...

Update docs/images/week13/bioled2.gif, docs/images/week13/bioled3.gif, docs/images/week13/bioled.gif, docs/images/week13/final3.gif, docs/images/week13/IMG_9996.jpg, docs/images/week13/bioled4.gif, docs/images/week13/final1.gif, docs/images/week13/final2.gif, docs/images/week13/IMG_0017.jpg, docs/images/week13/IMG_9998.jpg, docs/assignments/week13.md