Merge pull request #13 from cyberswat/master

Updating gems.
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Merge pull request #14 from waffle-iron/master

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added Ubuntu 14.04 support stubbed in centos support (CentOS not yet functional).
Updated readme to reflect support for Ubuntu 14.04
Updated readme to include stories in Ready badge
Updated readme to better reflect supported versions, broke-out vmware and virtualbox kitchen instances resolves #18
Updated readme to better reflect support version 2nd pass resolves #18
Merge pull request #19 from DavidXArnold/nmdbase-18

Nmdbase resolves some stuff
Adding bundle config
Fixing rubocop issues comitted by other devs.
starting CentOS support erroring on ssh config
updated to supprot centos(in progress) and use sssd
updated redhat sssd databag path
updated yubio pam ssh settings for rhel
fixed yubico settings for rhel
added back in failtoban defaults fixes #15
rubocop fixes
stub'ed in sssd_ldap databag, tmp comment out fail2ban config
started rhel tests