text: Title: [BUG] Notebooks use api=1 auth
  Body: **Describe the bug**
  Some demos use api=1/2 instead of api=3
  
  **To Reproduce**
  See main analyst notebook
  
  **Expected behavior**
  Should instead have something like:
  
  ```python
  # To specify Graphistry account & server, use:
  # graphistry.register(api=3, username='...', password='...', protocol='https', server='hub.graphistry.com')
  # For more options, see https://github.com/graphistry/pygraphistry#configure
  