Add link to Sunbelt slides

[brandonsepulvado]

@jjett I can add the link, but, since I don't own the Google slide deck, I didn't want to do so without letting you know. Would you mind adding it or just responding that you're fine with me doing it? Thanks!

[jjett]

Hi, the slides aren't in Google that I'm aware of. I can upload the powerpoint to the publications if that's helpful. I'll preemptively leave a copy here if you want to upload them to something like Slideshare instead of have a local copy here.
Sunbelt 2020.pdf