Add centos 5-7. Sort mapping
Try to detect th ebest version of a platform to use on the test
Add CentOS version normalization (6.4 becomes 6)

Also describe the intent of the regexp crap.
Also set group
Use virtualbox for CentOS 6
Add Upstart 0.6.5 support
Merge pull request #33 from jordansissel/centos-6-upstart-0.6.5-support

Centos 6 and Upstart 0.6.5 support