add autograded assessments

[alee]

CLI commands

1. Your team has updated the official upstream repository on GitHub. What CLI command (or GitHub Desktop equivalent) do you run to sync your local repository on your laptop with updated repository on GitHub?
2. You have a quick fix for some typos and to improve some dangling sentences in the plaintext documentation of your team's shared codebase. What do you do to submit your changes as a pull request back to your team's official upstream repository on GitHub?
3. (add more here)

GitHub desktop commands

Same questions, expect narrative answers or...?