maraujop/requests-oauth2 — pull request #7 by glenbot (2012-09-05 13:34:08+00:00)
Title: Headers to get_token

In some cases, like Salesforce, Content-Type is required to be set to get the token. See thread here:

http://boards.developerforce.com/t5/General-Development/unsupported-grant-type-for-OAuth-2-0-Web-Server/td-p/216063