Add github flavored syntax highlighting to README.md
Release 1.0.0

Summary:

Improved validation and permit ensuring the absense of mounts
closes: #3

Backwards-incompatible changes:

 - Update dependency on concat to use puppetlabs-concat

Features:

 - Improved input validation
 - Add autofs direct mount
 - Add ensure parameter to autofs::mount
Merge pull request #6 from pdxcat/dev

Release 1.0.0