Merge pull request #992 from ocsigen/coc

Adopt OCaml's code of conduct

Author: vouillon

CODE_OF_CONDUCT.md

@@ -0,0 +1,12 @@
+# Code of Conduct
+
+This project has adopted the [OCaml Code of Conduct](https://github.com/ocaml/code-of-conduct/blob/main/CODE_OF_CONDUCT.md).
+
+# Enforcement
+
+This project follows the OCaml Code of Conduct [enforcement policy](https://github.com/ocaml/code-of-conduct/blob/main/CODE_OF_CONDUCT.md#enforcement).
+
+To report any violations, please contact Jérôme
+Vouillon, Raphaël Proust, Vincent Balat, Hugo Heuzard and Gabriel
+Radanne at <moderation [at] ocsigen [dot] org>
+(or some of them individually).