apps: added PmWiki to the list

The pull request incorporates some of the suggestions from issue #10

Please, take it into account.
style corrections by MTecknology
unified recipe into one single file

Many corrections were made; suggested by MTecknology
changed apps -> recipe
fixed whitespace problem with .. ngx::
flipped allow -> deny in hiden files logging and access
Merge pull request #11 from renich/master

apps: added PmWiki to the list