Fixed a small bug introduced in previous commit (issue #8).
Fixed a small bug introduced in previous commit (issue #8).

Also, changed OpenID 2.0 detection method,
it now searches for openid.ns instead of openid.op_endpoint.

dimka3210/LightOpenID,soundasleep/lightopenid,hutushen222/LightOpenID,notr1ch/lightopenid,kounta/lightopenid,Mewp/lightopenid,iignatov/LightOpenID,wheniwork/lightopenid,pixnet/php-lightopenid,7citylearning/lightopenid,jfoucher/lightopenid