Add more IndieWeb meta tags to page, modify rel=me comment

[capjamesg]

I noticed that the README.md file links to the Webmention specification, a method of facilitating comments that are published on one's own site and sent to another site. This specification is one of a few in active use by the IndieWeb community that enables a more social, distirbuetd web.

I have added meta tags that are used for IndieAuth and Microsub, the former a W3C recommendation for identifying one's self with a URL and the latter a draft standard for enabling social readers. I have also added links to relevant resources to some comments, such as the comments for RelMeAuth and Webmention, pointing people to further information.

[capjamesg]

Following up on this!