Markup user profiles with Schema.org Person spec
Repair microdata type for website value

sameAs: "URL of a reference Web page that unambiguously indicates the item's identity. E.g. the URL of the item's Wikipedia page, Freebase page, or official website." - http://schema.org/Person
Merge pull request #173 from pdostal/profile_schema_markup

Markup user profiles with Schema.org Person spec. Fixes #118