Added more stuff for SEO techniques 

hi igor, as i promised, here now there is the possibility to handle

- meta robots
- link rel canonical
- link rel prev
- link rel next


http://googlewebmastercentral.blogspot.it/2011/09/pagination-with-relnext-and-relprev.html
http://googlewebmastercentral.blogspot.it/2009/02/specify-your-canonical.html