Add new file to README
diff --git a/README.md b/README.md
index ce11a3a..80f2bba 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@
 * registry/reg.py
 * registry/spec_tools/util.py
 * registry/validusage.json
+* registry/video.xml
 * registry/vk.xml
 * registry/vkconventions.py
 * All files under include/vulkan/ which are *not* listed explicitly as originating from another repository.