No longer a copy-paste of ReadmeFromPod

The text in the module's POD saying that it is a copy-paste of the
ReadmeFromPod plugin is replaced with a more accurate description for
the current state of the module as a wrapper for ReadmeAnyFromPod.
Switch dist.ini to @Author::RTHOMPSON bundle
Update test for changes in Pod::Markdown

For details, see commit 872954c8 in ReadmeAnyFromPod:

https://github.com/DarwinAwardWinner/Dist-Zilla-Plugin-ReadmeAnyFromPod/commit/872954c8d92c906aa093461c8abc717708b3ff42
v0.141140

    - Update for new behavior of Pod::Markdown, which now uses
      asterisks for bold formatting.