cleanup

hw/README.txt

-The assignment instructions and starter code (if needed) are posted here.
-
-Please place your solutions in the submission directory.  During each
-homework, you should run the following commands
-
-git pull   ... to fetch the latest homework instructions and starte code
-
-...prepare your homework in the appropriate directory hw1/ hw2/ ...
-...as you create files, run these commands:
-
-git add file1
-git add file2  ... [add all the files of your homework]
-
-... occasionally push your work to gitlab:
-git commt -a -m 'this is my homework 3, or any message you want'
-git push
-
-...commit and push as often as you want; we will pull your version right after the deadline.