package version metadata for external/

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Change-Id: Icc81a0d3a86967350dfdd6c2356fb838e2cbca50
diff --git a/README.version b/README.version
new file mode 100644
index 0000000..7270f7b
--- /dev/null
+++ b/README.version
@@ -0,0 +1,3 @@
+URL: https://github.com/antlr/website-antlr3/raw/gh-pages/download/antlr-3.4.tar.gz
+Version: 3.4
+BugComponent: 99142