Make dataset example self-contained

I’ve consolidated the example datasets under a geopandas-like geoplot.datasets domain (here).

This has the beneficial effect that it makes all of the examples in the geoplot documentation, especially the ones in the gallery, immediately reproducible for the user. However, the drawback is that I also have to distribute the example data with the library. After hewing and hawing every which way, I’ve gotten that down to a ~10 MB examples.zip file.

@choldgraf I would like your feedback on this idea. Is a 10 MB add-on like this an acceptable load for such a library? Or should I maybe provide an nltk-like downloader instead?

[pybokeh]

@ResidentMario Thank you! All I did was run:

import quilt
quilt.install("ResidentMario/geoplot_data")

and was then able to run the example.

[ResidentMario]

The code snippet pybokeh included in his comment should do the job. I think the new URL is https://docs.quiltdata.com/get-started/step-by-step.