Allow meeting name, speaker, topic to be passed as part of URL

[joeryan]

Previously, calls to http://slide.lansing.codes#javascript would create a slide for the Javascript meetup. The name should also be tied to the API calls to retrieve upcoming events and other available information. Currently only the meetup.com API is expected to be supported, but support for other event organizing APIs would be a future improvement.

[joeryan]

It looks like meetup is moving to graphQL for their API access and placing it behind a MeetUp Pro subscription. I'm not sure this can still be accomplished with the MeetUp Pro requirement.

[egillespie]

It looks like meetup is moving to graphQL for their API access and placing it behind a MeetUp Pro subscription. I'm not sure this can still be accomplished with the MeetUp Pro requirement.

I think we can query against the Lansing Codes Firestore database. That would allow us to use our own internal identifiers (e.g. demo-night or javascript) instead of Meetup-specific group names and avoid needing to use a Meetup Pro subscription altogether. 😎

Here's a link to what the Firestore database looks like:
https://github.com/lansingcodes/api#using-the-data