Vendor the external cookbooks

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

cookbooks/composer/metadata.rb

@@ -0,0 +1,23 @@
+name 'composer'
+maintainer 'David Joos'
+maintainer_email 'development@davidjoos.com'
+license 'MIT'
+description 'Installs/Configures Composer'
+long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
+version '2.6.1'
+
+%w(debian ubuntu redhat centos fedora scientific amazon windows).each do |os|
+  supports os
+end
+
+source_url 'https://github.com/djoos-cookbooks/composer' if respond_to?(:source_url)
+issues_url 'https://github.com/djoos-cookbooks/composer/issues' if respond_to?(:issues_url)
+
+depends 'apt'
+depends 'php'
+depends 'windows'
+
+recipe 'composer', 'Installs (if applicable) and self-updates composer.'
+recipe 'composer::install', 'Installs composer.'
+recipe 'composer::self_update', 'Installs (if applicable) and self-updates composer.'
+recipe 'composer::global_configs', 'Sets up global config options via `composer config --global`'