Create exercises for teaching & learning about writing documentation

[bkatiemills]

We need to come up with some activities for teaching about good documentation. Activities in this repo should be

• highly interactive
• designed for a small group of around 4-6 people (think of a lab group)
• do-able with about the level of skill of someone who has been through a SWC bootcamp.

See the examples I'm working on in /activities. Before we dive in, let's brainstorm some ideas in this issue of what these activities might try to teach, and what they might involve.