package version metadata for external/

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Change-Id: I88f49806a3fb11acbe39aba05e921b4df297b200
diff --git a/README.version b/README.version
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--- /dev/null
+++ b/README.version
@@ -0,0 +1,2 @@
+URL: https://code.google.com/p/jsilver/
+Version: 1.0.0