Spike a CONTRIBUTING template

Author: jbarnette

CONTRIBUTING.md

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+Thanks for contributing to Boxen! A couple of notes to help you out:
+
+* We're conservative with version bumps, especially on services. We
+  tend to keep things aligned with what we're personally using in
+  development. If that doesn't work for your team, fork the module and
+  use it in your Boxen instead.
+
+* Otherwise, go crazy! Fork it, fix it, test it, pull request it.
+  Remember that a PR is the beginning of a conversation, not the end
+  of one.
+
+:heart:,
+Boxen