Add meetup widget

[emanguy]

Description and related issues -
We should add a meetup widget which shows activity on our meetups similar to this one: caseywatts/novacodecoffee.github.io@85cff84

What is the goal or purpose of this ticket?
More useful information on the website!

Mockups or Screenshots

Acceptance criteria

Given	When	Then

This task is done when…

This could include:

• a list of changes to be made
• all acceptance criteria are met
• the description of what a user might be able to accomplish once this is done
• identify 508 considerations and/or recommendations

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[caseywatts]

Related to (dupe?) this one: #14

[caseywatts]

I think the best way to do this lately is probably by using the .ics ical feed (since they changed the API years ago)
https://www.meetup.com/Baltimore-Code-and-Coffee/events/ical/

This ical link is from /events/calendar for our group on meetup.com:
https://www.meetup.com/baltimore-code-and-coffee/events/calendar/

We can parse it using a library like this one:
https://github.com/mozilla-comm/ical.js/
(I'm sure there are many! No particular preference which one)