Updated FreeBSD 9.2 to 9.3.
Move install.sh to correct directory
Updated ISO url for FreeBSD 9.3
Merge pull request #259 from juliandunn/freebsd-9.3

update to FreeBSD 9.3
Document CentOS 7.0 box. Fixes #260.
Merge pull request #262 from juliandunn/centos-7

Document CentOS 7.0 box.
does an install, but aborts misteriously mid way through\!
Packer now completes without error with this configuration.
Does an install, but aborts mysteriously mid way through!
Packer now completes without error with this configuration.
tidy-up merge