Add quick poll at the start to gather details about tutorial attendees

[jcrist]

We should gather some data about tutorial attendees next time we give the tutorial. This would be useful both for steering the tutorial towards topics interesting towards users, as well as better understanding our potential user base.

Questions like:

• Job role (data scientist, data engineer, etc...)
• Job field of some form (geospatial, finance, idk, ...)
• Why did you sign up for this tutorial?
• What are you hoping to learn?

We might make use of a realtime polling service (post a link, can see live results as they come in). Here's one option, but there are certainly others.

[lostmygithubaccount]

IMO an old-fashioned show of hands could also work fine (worked into the slides or just spoken)

[jcrist]

I think that'd work well if all topics are fixed categories, but if we want to add a free-response or something that's trickier. No strong thoughts on method, just generally think we should gather some details on attendees.

[deepyaman]

I feel like role is the most important question, more so than field, because there's not much we can do about that. Role is also a bit more constrained, so a show of hands could be reasonable there.