Add YAML
diff --git a/third_party/go-yaml/yaml/README.google b/third_party/go-yaml/yaml/README.google
new file mode 100644
index 0000000..5415d20
--- /dev/null
+++ b/third_party/go-yaml/yaml/README.google
@@ -0,0 +1,3 @@
+This package is the popular "gopkg.in/yaml.v2" package for YAML.
+
+URL: https://github.com/go-yaml/yaml.git