mitsuhiko/flask-oauth — pull request #21 by mattupstate (2012-04-18 18:31:47+00:00)
Title: Add optional access_token_params for providers such as foursquare who require them

Add access_token_params to allow for optional parameters for access token calls. This was specifically needed for foursquare's API. They require a parameter named 'grant_type' when making a request to https://foursquare.com/oauth2/access_token