Pyramid-who

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- Pass the identifier plugin to ``api.remember``, rather than its name,
as required by the interface. Fixes
https://github.com/Pylons/pyramid_who/issuesissue/2

- Fixed test of ``unauthenticated_userid``.

- Fixed tests broken by ``repoze.who`` changes (relaxing exceptions to
warnings for missing / invalid config rile).

- Fixed URL to docs in README.txt. Thanks to Łukasz Fidosz.

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- Add ``unauthenticated_userid`` method to whov2 authentication policy to
appease Pyramid 1.0 IAuthenticationPolicy interface.

- Add a tox.ini file for Jenkins testing.

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- Initial public version.