golang/oauth2 — pull request #39 by clsung (2014-09-11 02:54:06+00:00)
Title: Add Linkedin to the providers not supporting Auth headers.

Access to Linkedin API returns this:
{"error_description":"missing required parameters, includes an invalid parameter value, parameter more than once. : client_secret","error":"invalid_request"}

see also https://code.google.com/p/goauth2/issues/detail?id=43