README.md : add missing ','

Small typo, a ',' was missing on the minimal exampel conf
Merge pull request #201 from chtitux/patch-1

README.md : add missing ','
fix concat broken on windows due to case sensitive regexp -- made it case insensitive
Merge pull request #204 from GeoffWilliams/windows_case_fix

fix concat broken on windows due to case sensitive regexp -- fixes MODULES-1203
Fix errors with the future parser.

Error: Illegal name. The given name _ensure does not conform to the naming rule \A((::)?[a-z0-9]w*)(::[a-z0-9]w*)*\z at /etc/puppet/vendor/modules/concat/manifests/fragment.pp:57:5
Merge pull request #206 from notanisp/master

Fix errors with the future parser.