OpenID now working again on trunk (at least using only option, haven't checked hybrid OpenID/username & password yet) updated Section 3.2 of User's Guide with a paragraph showing how to use OpenID with a GooglePlus OpenID account.

git-svn-id: https://svn.apache.org/repos/asf/roller/trunk@1516294 13f79535-47bb-0310-9956-ffa450edef68