Remove chef client for provisionerless base boxes support
Merge branch 'BENTO-10' into provisionerless-base-boxes

Conflicts:
	definitions/.centos/session.rb
[BENTO-35] Remove chef-client.sh and symlinks from all definitions. Update README to reflect the fact that we no longer ship Chef with baseboxes.
Merge pull request #46 from juliandunn/BENTO-35

[BENTO-35] Do not ship Chef with our baseboxes anymore.