Move more non-apache version specific changes to the top
remove apache.event.maxclients as that doesn't exist
More CHANGELOG improvements by referencing issue numbers and platform improvements
reference yum-epel, add CentOS 7.0 to README
FC001: Use strings in preference to symbols to access node attributes
rename centos 7 fixture to centos 7.0
Update to foodcritic 4.0, guard-rspec 4.3
Update platforms to debian 7.6, centos 7 -> centos 7.0 using opscode box