AFNetworking/AFOAuth2Client — pull request #78 by michalkonturek (2014-03-27 17:51:18+00:00)
Title: FIX: Does not handle responses with missing 'expires_in'.

[SalesForce API][SF] does not return `refresh_token` and `expires_in` when username-password authentication is performed causing the lib to crash.

It also fixes #70.

[SF]:https://www.salesforce.com/us/developer/docs/api_rest/