Renamed ChangeLog to Changes and updated dist.ini to put repository info in metadata

Hi,

I've made two small changes:

 * Renamed ChangeLog to Changes, as per CPAN::Changes::Spec. See [this](http://changes.cpanhq.org/dist/TPath/1.000)
 * Added [GithubMeta] to dist.ini so the metadata will include the repository, allowing MetaCPAN to link to it, etc.

Cheers,
Neil