Added a PerlTidy page to the wiki

Hello!

It includes a reference (and snippet) from the Emacs Wiki
(www.emacswiki.org) on how to incorporate perltidy into emacs as the
defuns “perltidy-region” and “perltidy-defun”.

http://wiki.bestpractical.com/?PerlTidy

Cheers!

–j
Jim Meyer, Geek at Large purp@acm.org