Deleted docs/images/week13/bioled4.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

Update docs/images/week12/alg5.gif, docs/images/week12/IMG_9941.jpg, docs/images/week12/ALGINATE1.gif, docs/images/week12/alg6.gif, docs/images/week12/alg4.gif, docs/images/week12/alg3.gif, docs/images/week12/IMG_9890.jpg, docs/images/week12/IMG_9896.jpg, docs/images/week12/IMG_9895.jpg, docs/images/week12/alginate2.gif, docs/images/week12/IMG_9827.jpg