Updated Changes and added github repo to Metadata (via Makefile.PL)

Hi,

I've tweaked the formatting of your Changes file according to the spec defined in CPAN::Changes::Spec.

Following this format means that various tools can more easily process your distribution automatically. You can find out more about this at Brian Cassidy's CPAN::Changes Kwalitee Service (http://changes.cpanhq.org), which is where I saw your module listed :-)

I also added the repository line to you Makefile.PL, so the github repo will appear in the module's metadata. I haven't tested this, as I don't have the prereq modules, but this is the line which will [apparently do the job](http://perlmaven.com/how-to-add-link-to-version-control-system-of-a-cpan-distributions).

Cheers,
Neil

PS I'm doing this because I'm on a quest to help improve CPAN:

> http://questhub.io/realm/perl/quest/51f0337718ba7d3959000086