Authorship Markup plugin is a Joomla extension which helps you display author information in search results for content.
Authorship Markup plugin features:
- provides an easy way to use authorship markups
- supports authorship markup for multiple authors
- choose between Article Author, Article Author Alias or Contact Name to be displayed as author name.
Add the domain in the 'Contribute' section in your G+ a/c
(A good tutorial by kissmetrics on Authorship Markup is available online)
Install this extension and follow the very good instructions provided. It is all there, just need to pay attention to the details!