Zero to JupyterHub, batchspawner style

There are many batch jobqueue systems out there that are currently considering using JupyterHub. Currently the advice given to them is to talk to groups that have successfully done it in the past. This may not be accessible to smaller centers or clusters that don't feel quite as comfortable reaching out. The Zero-to-JupterHub documentation for Kubernetes has been a success in getting novice groups and users (like mysefl) to build productive systems. I wonder if we've learned enough about how BatchSpawner gets used in practice to provide best practice guidelines

cc @minrk @choldgraf