Add a CONTRIBUTING.md file pointing to the wiki

jecisc · jecisc · commit a52935ae4ffb · 2018-05-24T14:27:06.000+02:00
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
@@ -0,0 +1,5 @@
+# Contributing
+
+If you wish to contribute to Iceberg you can check this wiki page:
+
+https://github.com/pharo-vcs/iceberg/wiki/Contributing-to-Iceberg
