Need a data policy

[ramonawalls]

Here’s Neotoma’s policy: https://www.neotomadb.org/data/category/use
PaleoBioDB: https://paleobiodb.org/#/faq/accessing-data

Key issue to cover is embargo. See notes at https://docs.google.com/document/d/14-sRqS_6F9w5wdGZZwaqkAWwNv6GagO8we7cv_JWShI/edit#heading=h.d8e2nf2q2ota