Added CONTRIBUTING.md

CONTRIBUTING.md

@@ -0,0 +1,16 @@
+# Contributing to Dockercraft
+
+Want to hack on Dockercraft? Awesome! Here are instructions to get you
+started.
+
+Dockercraft is part of the [Docker](https://www.docker.com) project, and
+follows the same rules and principles. If you're already familiar with
+the way Docker does things, you'll feel right at home.
+
+Otherwise, go read Docker's
+[contributions guidelines](https://github.com/docker/docker/blob/master/CONTRIBUTING.md),
+[issue triaging](https://github.com/docker/docker/blob/master/project/ISSUE-TRIAGE.md),
+[review process](https://github.com/docker/docker/blob/master/project/REVIEWING.md) and
+[branches and tags](https://github.com/docker/docker/blob/master/project/BRANCHES-AND-TAGS.md).
+
+Happy hacking!