However one of the things you will not see if you follow this are, git or additional prompts (context queues). To get those you need to set/ configure the proper theme (default_leftonly).
If you read the docs: https://powerline.readthedocs.io/en/latest/configuration.html
You like me will likely be wondering, how do I do what?
So the long and short of how to configure the proper theme, is by running:
# mkdir -p ~/.config/powerline
# cat <<-'EOF' > ~/.config/powerline/config.json
# exec bash