Vendor the external cookbooks

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

cookbooks/nodejs/recipes/npm_packages.rb

@@ -0,0 +1,11 @@
+node['nodejs']['npm_packages'].each do |pkg|
+  pkg_action = pkg.key?('action') ? pkg['action'] : :install
+  f = npm_package "nodejs_npm-#{pkg['name']}-#{pkg_action}" do
+    action :nothing
+    package pkg['name']
+  end
+  pkg.each do |key, value|
+    f.send(key, value) unless key == 'name' || key == 'action'
+  end
+  f.action(pkg_action)
+end if node['nodejs'].key?('npm_packages')