Vignette

[jsicherman]

We'll also need a vignette for release that includes (at least) a couple examples of using the API wrapper.

Minimally, it should show how to use it:

• [x] asynchronously (and synchronously)
• [x] for initiating file downloads (and not)
• [x] memoised (and not)

[jsicherman]

Closed in 7402203