Add style checker for PHP using PHP Mess Detector
Move phpmd before phpcs and chain phpcs after phpmd after php

That makes up a nice chain, that checks for syntactic, semantic and
stylistic correctness in the right order.
Change flycheck-phpmd-rulesets value to a list of strings
Don't use option in phpmd's command
Simplify PHP provisioning

Use a more powerful PHP module, which supports channel auto-discovery,
doing away with our manual channel discovery
Use explicit module names

Specify explicit module names if the puppetforge name is different from
the module name.
Merge branch 'master' into yasuyk-phpmd

* master:
  Parse checkstyle output of CSS
  Update Changelog and Credits
  Add syntax checker for Slim using Slim compiler
  Update jshint tests
Update credits and changelog

You are awesome, @yasuyk.  Thank you for all these great syntax checkers
Use phpcs directly if phpmd is not available
[Fix #249] Merge branch 'yasuyk-phpmd'

* yasuyk-phpmd:
  Use phpcs directly if phpmd is not available
  Update credits and changelog
  Use explicit module names
  Simplify PHP provisioning
  Don't use option in phpmd's command
  Change flycheck-phpmd-rulesets value to a list of strings
  Move phpmd before phpcs and chain phpcs after phpmd after php
  Add style checker for PHP using PHP Mess Detector