Get your code into a state where a person could clone
your repo, follow the instructions in your
doc/running.txt and doc/development.txt
documents, and effectively run and develop your code.
Use git tag to tag your repository with
the tag midterm.
Commit and push the tag to github (note that a normal
git push doesn't push tags).
On #general in Slack, post the URL of the
repository your team is using. (This will just be easier
for me than rooting around in all the teammates' repos.)