shared.py: _make_backgound_map() and plot_map() #32
Description
Original report by Nancy Soontiens (Bitbucket: nsoontiens, ).
These functions could be really useful outside of nowcast, especially when trying to produce figures for papers or talks. Maybe in geo_tools?
This isn't super urgent, I don't think I actually call this anywhere but it was a thought as a read through the module.