Library needs more in-depth documentation in the docs directory

[thomashoneyman]

Is your change request related to a problem? Please describe.
As described in the documentation section of the Library Guidelines, Contributors libraries are expected to have some documentation in the docs directory -- specifically, at least a short tutorial that expands on the quick start in the README.

This library currently doesn't have comprehensive documentation in the docs directory.

Describe the solution you'd like
At least a short tutorial needs to be added to the docs directory, or other documentation as described in this Divio article.

The argonaut-codecs docs directory has a good example of expanded documentation for a Contributor library. But it would even be useful to add something considerably smaller and shorter to this library.

The axios library for JavaScript has, in its README, a nice breakdown of how to perform several common requests using the library.

Additional context
See the Governance repository for more information about requirements in the Contributors organization.