Add CoC.md reference file (tc39#1168)

Jory Burson · littledan · commit 1c6fb24ef7b2 · 2018-04-12T00:48:01.000+02:00
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
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+This repository is a TC39 project and subscribes to its [code of conduct](https://tc39.github.io/code-of-conduct/). It is available at [https://tc39.github.io/code-of-conduct/](https://tc39.github.io/code-of-conduct/). 
+
+To ask a question or report an issue, please email [tc39-conduct-reports@googlegroups.com](mailto:tc39-conduct-reports@googlegroups.com).

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	`1`	`+This repository is a TC39 project and subscribes to its [code of conduct](https://tc39.github.io/code-of-conduct/). It is available at [https://tc39.github.io/code-of-conduct/](https://tc39.github.io/code-of-conduct/).`
	`2`	`+`
	`3`	`+To ask a question or report an issue, please email [[email protected]](mailto:[email protected]).`