Vendor the external cookbooks

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

cookbooks/composer/recipes/install.rb

@@ -0,0 +1,36 @@
+#
+# Cookbook Name:: composer
+# Recipe:: install
+#
+# Copyright (c) 2016, David Joos
+#
+
+include_recipe node['composer']['php_recipe']
+
+if node['platform'] == 'windows'
+  windows_package 'Composer - PHP Dependency Manager' do
+    source node['composer']['url']
+    options %w(
+      /VERYSILENT
+    ).join(' ')
+  end
+
+  install_dir = "#{node['composer']['install_dir'].tr('/', '\\')}\\bin"
+
+  ENV['PATH'] += ";#{install_dir}"
+  windows_path install_dir
+else
+  log '[composer] phar (PHP archive) not supported' do
+    level :warn
+    not_if "php -m | grep 'Phar'"
+  end
+
+  file = node['composer']['install_globally'] ? "#{node['composer']['install_dir']}/composer" : "#{node['composer']['install_dir']}/composer.phar"
+
+  remote_file file do
+    source node['composer']['url']
+    mode node['composer']['mask']
+    action :create
+    not_if { ::File.exist?(file) }
+  end
+end