update to latest vagrant, chef and berkshelf versions
Vagrant.require_plugin is deprecated with latest vagrant version, use :plugins group in Gemfile instead
add missing require (was causing a load error)
berks API has changed, for now just shell out to berks for vendoring cookbooks
remove berkshelf dependency from gemspec - we expect that `berks` is on the path; update README
enable vagrant-cachier via `config.cache.scope` because `config.cache.auto_detect` does not enable it anymore since v0.6.0
back to ubuntu 13.04 until onehealth-cookbooks/apache2#135 is solved (i.e. new version of apache2 cookbook released that support 14.04)
back to Ubuntu 12.04 LTS and update URL of sample-toplevel-cookbook
fix cookbook URL
update to Ruby 2.0 in .travis.yml
Merge pull request #6 from tknerr/chefdk-update

Chefdk update