Adding Client class for OAuth 2.0 draft spec: https://svn.tools.ietf.org/html/draft-hammer-oauth2-00#section-3.5.2.1
Adding Client class for OAuth 2.0 draft spec: https://svn.tools.ietf.org/html/draft-hammer-oauth2-00#section-3.5.2.1

jackdied/python-foauth2,hybridgroup/python-oauth2,artemrizhov/python-oauth2