Add README.version.

Change-Id: I8b6d0a0fd0f8208b0a5fe4335281851ced5c0467
diff --git a/README.version b/README.version
new file mode 100644
index 0000000..0ead1a1
--- /dev/null
+++ b/README.version
@@ -0,0 +1,4 @@
+URL: http://llvm.org/git/libcxxabi.git
+Version: d8093df5ebe5d755c810980d403af20b32deea5f
+BugComponent: 117395
+Owners: danalbert, srhines, android-llvm