Add Required provides to the META

[jonathanstowe]

Hi,
was just surveying the warnings from the modules "indexer"

[Wed Oct 26 18:25:26 2016] [info] Processing dist 72 of 739
[Wed Oct 26 18:25:26 2016] [info] Using ModulesPerl6::DbBuilder::Dist::Source::GitHub to load https://raw.githubusercontent.com/masak/tardis/master/META.info
[Wed Oct 26 18:25:26 2016] [info] Fetching distro info and commits
[Wed Oct 26 18:25:26 2016] [info] Downloading META file from https://raw.githubusercontent.com/masak/tardis/master/META.info
[Wed Oct 26 18:25:26 2016] [info] Parsing META file
[Wed Oct 26 18:25:26 2016] [warn] Required `perl` field is missing
[Wed Oct 26 18:25:26 2016] [warn] Required `provides` field is missing
[Wed Oct 26 18:25:27 2016] [info] dist source URL is same as META repo URL (https://github.com/masak/tardis)

There is already a PR for the 'perl' version :)