README updated from POD

Merge pull request #250 from perl-workflow/release_candidate_2.04

Preparing release 2.04

Bug fix release 2.03

Major release 2.02 YAY

Second 2.X TRIAL

2.00 TRIAL release

Closing bug and feature release 1.62

Closing bug fix release 1.61

Closing bug fix release 1.60

Closing release 1.59