Resolve "Update People page for Fall 2017"
Updates exec and devs. Please note I used a combination of pf and Slack for names. Cross-checked against current-devs and didn't add alumni because that's way too annoying to track down. Maybe in Spring just ask pf. Once it's in prod maybe ping current-devs and ask for any amendments.
Also note gravatar is on my short list. When I run jekyll through a local webserver I get:
[2017-08-13 13:06:00] ERROR /email@example.com' not found.`
So it probably just needs linked to the proper gravatar endpoint (https://www.gravatar.com/avatar/`md5(email)`)
Closes #38 (closed)