[perl5-dbi/dbi] ffdfc8: Fix travis-ci link in README

[Tim Bunce]

  Branch: refs/heads/master
  Home:   https://github.com/perl5-dbi/dbi
  Commit: ffdfc830eeb7b36c60b9a295c38048988da0137f
      
https://github.com/perl5-dbi/dbi/commit/ffdfc830eeb7b36c60b9a295c38048988da0137f
  Author: Tim Bunce <tim.bu...@pobox.com>
  Date:   2013-04-05 (Fri, 05 Apr 2013)

  Changed paths:
    M README.md

  Log Message:
  -----------
  Fix travis-ci link in README