add rel=author links to Google+ to pod and release pages 

In regular Google searches some results have a avatar next to them. This makes those hits more personal.

In order to have those two things need to be done:
1) There has to be a link to the Google+ profile with ?rel=author added at the end
2) The author needs to tell Google+ they are contributing to metacpan.com
See https://support.google.com/webmasters/answer/1408986?hl=en

This patch adds the 1) part.

If implemented, I think this will improve the standing of MetaCPAN for people searching on Google.