fernandezpablo85/scribe-java — pull request #375 by brianhsu (2013-04-30 08:10:00+00:00)
Title: Add support for ImgUr API version 3.

ImgUr API version 3 using OAuth 2.0 and have differnt way to get
access token and sign request.

Main differences:

- When getting authorization URL, we need to pass different
grant_typ parameter according to whether we have callback URL.

- ImgUr API version 3 using POST to get access token, all
parameters need to passed as body paramter, query string will
not work.

- ImgUr API using HTTP header to sign request, so we created
OAuthImgUr3Impl in order to handle this.