Gemfile in vagrant-pe_build-0.3.0 vs Gemfile in vagrant-pe_build-0.4.0

@@ -1,3 +1,15 @@
 source 'https://rubygems.org'
 
 gemspec
+
+group :doc do
+  gem 'yard', '~> 0.8.7'
+  gem 'redcarpet'
+end
+
+group :development do
+  # We depend on Vagrant for development, but we don't add it as a
+  # gem dependency because we expect to be installed within the
+  # Vagrant environment itself using `vagrant plugin`.
+  gem "vagrant", :git => "git://github.com/mitchellh/vagrant.git"
+end