Update and rename proposal.md to final.md

Author: Arun Kirubarajan

proposal.md renamed to final.md

@@ -1,5 +1,5 @@
 # Final Project
-> Proposal due April 13th at 11:59 PM. Code due over reading days.
+> Due December 14th at 11:59 PM (no late days allowed!)
 
 ## Description
 The moment you have been waiting for: the final project. Create whatever you want to build; I hope by now you can see that you can do anything in Python! You are allowed to work with a partner and the project must be roughly be of a similar scale to one of the homework assignments. We encourage you to build something you can show off! You will be assigned with a TA that will bounce ideas off of you and can give you guidance throughout your project.