Added abstract section to pod

Hi,

I added an abstract section to the pod. MetaCPAN and search.cpan.org both expect to find this, and without it they don't present the module in the usual way.

I marked the module as deprecated in the abstract, so having an abstract will make this more clear in search results.

You could also consider putting a note in the doc saying that you'll remove all copies of this dist from CPAN at some date later this year. Or you could do that now, since it's been 4 years since you deprecated the module?

Cheers,
Neil