Vendor the external cookbooks

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

cookbooks/application_git/CHANGELOG.md

@@ -0,0 +1,10 @@
+# Application_Git Changelog
+
+## v1.1.0
+
+* [#2](https://github.com/poise/application_git/issues/2) – Inherit user and group values from the parent `application` resource.
+* [#3](https://github.com/poise/application_git/issues/3) – Fix usage with users created during the current Chef run.
+
+## v1.0.0
+
+* Initial release.