The OpenID plugin allows users to use OpenID to login.

See: http://openid.net/

Installation
============
This plugin is enabled by default

Settings
========
openidonly: Whether we only allow logins through OpenID.
trusted_provider: URL to the OpenID provider.
append_username: Whether to append the username at the end of the OpenID URL

Example
=======
$config['site']['openidonly'] = true;
$config['openid']['trusted_provider'] = "http://example.org";
$config['openid']['append_username'] = true;
addPlugin('OpenID');