Convert meta to v1.3 of the spec

Module::Faker (and CPAN::Faker) are awesome!
I look forward to using them more to increase the tests on metacpan (and probably other dists).

Module::Faker doesn't seem to support v2 of the spec
and that caused me some confusion since I was using JSON files to specify my dists.
That was a poor assumption on my part
(that yaml == v1 and json == v2 (CPAN::Meta does not care about the format)),
but it took me a while to figure out why my preqreqs weren't registering
(in fact they were disappearing).

There are probably better changes to make than this
(like perhaps using CPAN::Meta to generate the file so that you get more parts than just the 'requires' if that was in the scope for this module) 
but this is what I came up with to understand what was happening,
so I thought I'd offer it.

While I'm offering, I'd be willing to try to write some docs for this (in any state) if you're interested.
Thanks a lot for this!