Update acceptance tests to use latest Bento baseboxes.
Add `rubocop` support
Fix `rubocop` style errors.
Update `.travis.yml` to test Ruby 2.0.0 and run Rubocop.
Merge pull request #56 from schisamo/rubocop-support

Rubocop Support
v1.2.0
Add missing item (PR #56) to CHANGELOG
filder 'stdin is not a tty' when trying to figure installed Chef version
Merge pull request #57 from scalp42/fix_installed_version_method

filder 'stdin is not a tty' when trying to figure installed Chef version
Add some additional acceptance test coverage for #57

This simple test verifies that Chef is not reinstalled into a system 
where the desired version of Chef already exists.
v1.2.1
Add missing attribution to CHANGELOG