Vendor the external cookbooks

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

cookbooks/nodejs/recipes/repo.rb

@@ -0,0 +1,20 @@
+case node['platform_family']
+when 'debian'
+  package 'nodejs-apt-transport-https' do
+    package_name 'apt-transport-https'
+  end
+
+  apt_repository 'node.js' do
+    uri node['nodejs']['repo']
+    distribution node['lsb']['codename']
+    components ['main']
+    keyserver node['nodejs']['keyserver']
+    key node['nodejs']['key']
+  end
+when 'rhel', 'amazon'
+  yum_repository 'node.js' do
+    description 'nodesource.com nodejs repository'
+    baseurl node['nodejs']['repo']
+    gpgkey node['nodejs']['key']
+  end
+end