Create demo and tutorial for approach bot usage

[vinomaster]

Since #217 move the CoMap demo to use moderator, we are now lacking a good exemplar for when to use bots instead of the moderator. Our tutorials and demos need to help distinguish when these different approaches should and should not be used.

[vinomaster]

This issue can be addressed via a new demo , call it a simple stick demo, whereby the tutorial for it demonstrates how an app can be created to use two components.

1. Stock Indices Bot -- a bot that pushes information for a fixed set of stock indices. this bot is not collaborative
2. A stock wish list that can be updated by participants that uses the moderator.