New setup instructions - no docker, but keep local conda and file download

[emiliom]

@lsetiawan, I just realized that to provide instructions for local conda configuration and data file downloads (ie, for a setup w/o docker), the documentation we put together for my Seattle MapTime presentation is already a perfect starting point!

• https://github.com/emiliom/geopandas-tutorial-maptime
• https://github.com/emiliom/geopandas-tutorial-maptime/blob/master/install-conda.md

It'll probably require some updates, but I suspect they'll be small.

Ah, but I realize now that you're also working on these intro materials:
https://github.com/geohackweek/Introductory/tree/gh-pages/_episodes

Anyway, we can follow up in a week or two.

[emiliom]

Already incorporated into Introduction episode. Closing issue.