package version metadata for external/

This will be used for automated notification of external vulnerability
reports.

Change-Id: I19d6568fad1ec9c60c247f4306a3928e58faafab
diff --git a/README.version b/README.version
new file mode 100644
index 0000000..3b93531
--- /dev/null
+++ b/README.version
@@ -0,0 +1,3 @@
+URL: http://home.ccil.org/~cowan/tagsoup/tagsoup-1.2.1-src.zip
+Version: 1.2.1
+BugComponent: 1351