Vendor the external cookbooks

Knife-Zero doesn't include Berkshelf support, so vendoring everything in
the repo is convenient again

cookbooks/ark/libraries/resource_deprecations.rb

@@ -0,0 +1,33 @@
+module Ark
+  class ResourceDeprecations
+    def self.on(resource)
+      new(resource).warnings
+    end
+
+    def initialize(resource)
+      @resource = resource
+    end
+
+    attr_reader :resource
+
+    def warnings
+      applicable_deprecrations.map { |_, message| message }
+    end
+
+    def applicable_deprecrations
+      deprecations.select { |condition, _| send(condition) }
+    end
+
+    def deprecations
+      { strip_leading_dir_feature: strip_leading_dir_feature_message }
+    end
+
+    def strip_leading_dir_feature
+      [true, false].include?(resource.strip_leading_dir)
+    end
+
+    def strip_leading_dir_feature_message
+      'strip_leading_dir attribute was deprecated. Use strip_components instead.'
+    end
+  end
+end