Add structured data markup for `itemprop="person"` in author-profile (#647)
Add structured data markup for `itemprop="person"` in author-profile (#647)

Adds schema.org data for image, name, homeLocation, url, email,
and sameAs (for all the social media links).
json-blueprint/json-blueprint.github.io,json-blueprint/json-blueprint.github.io,json-blueprint/json-blueprint.github.io