Pin chef and test-kitchen versions.
Hardcode ruby devkit into Windows customization

Fixes chef-dk#100 by adding hardcoding the necessary bits for the devkit
into the operating_system.rb file that we currently create to ensure gems
are installed into the users directory on Windows. Also reverts 5b99247,
as it proved only half of a solution, the other half being complicated
balancing of build-order to make sure rubygems-customization happened at
exactly the right time (before devkit, but not before bundler, at least).
Make sure the aux gems are installed into the embedded directory.
Include fauxhai for chefspec.
Merge pull request #225 from opscode/sersut/dk-rel-prep

Chef DK Release Prep
Merge pull request #224 from opscode/btm/devkit-fix

Hardcode ruby devkit into Windows customization
Access attributes through the project
Upgrade to Omnibus 4.0
Remove RPM signing code (this is in Omnibus core now)
Remove example omnibus.rb and use a real one
Remove Vagrantfile (we have TK now)
Move files/ -> resources/
Remove todo.txt
Update .kitchen.yml to mount local Omnibus
Update Berksfile
Update README to follow new standards
Update project copyright headers
Update projects to use https:// URLs
Use default_root instead of hardcoding /opt for install_dir
Use new compressor and packager DSL methods