[Enhancement] Add Executable Jupyter Notebook Showing Basic Library Usage

## Motivation

As a new developer approach approaching this library, I would like to be able to try things out right away without having to install anything. To enable this, we can let people try out online jupyter notebooks using the `mybinder.org` service (see [here](https://mybinder.org/)). Using the code examples from the `README.md` would be sufficient as a first pass.

We would want to provide a field that lets the user supply their own API key, since there isn't a public shared account.

Here are 2 projects which use `mybinder` to provide this capability, with a link to the PR where that capacity was enabled.

- https://github.com/CartoDB/cartoframes/pull/302
- https://github.com/jvns/pandas-cookbook/pull/62

If you are interested in picking this up and would like further guidance/mentorship on how to proceed, please let me know.

This is a practical subset of what I'd eventually like to expand into #1.