Add CODE_OF_CONDUCT.md pointing to the ASF CoC
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
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+++ b/CODE_OF_CONDUCT.md
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+Please be aware that this and every Apache Software Foundation project is
+governed by the official Apache Software Foundation
+[Code of Conduct](https://www.apache.org/foundation/policies/conduct.html).