convert all search.cpan.org links to metacpan.org
Merge pull request #2 from karenetheridge/topic/metacpan

convert all search.cpan.org links to metacpan.org
add cpanfile and snapshot for carton-based CI builds and deployments
Fix links to Moose::Manual, Moose::Cookbook, etc.

Links such as https://metacpan.org/release/Moose/lib/Moose/Manual.pod return
Not Found, while https://metacpan.org/pod/Moose::Manual seems to return the
newest version of the pod in question.
Merge pull request #3 from adsj/master

Fix links to Moose::Manual, Moose::Cookbook, etc.