http://developer.github.com/v3/orgs/members/#check-membership `GET /orgs/:org/members/:user` 204 -> true 404 -> false 302 -> `GET /orgs/:org/public_members/:user` 204 -> true 404 -> false
http://developer.github.com/v3/orgs/members/#check-membership
GET /orgs/:org/members/:user204 -> true
404 -> false
302 ->
GET /orgs/:org/public_members/:user204 -> true
404 -> false