docs: Create CONTRIBUTING.md (#1387)

CONTRIBUTING.md

@@ -0,0 +1,35 @@
+# Contributing to Restify
+
+Welcome to the restify community! This document is written both for maintainers and community members!
+
+## Issues and PRs
+
+### Commit Messages
+
+When merging a PR, we squash and merge to keep our commit history clean. Our commit messages use the conventional changelog format (http://conventionalcommits.org/) to automagically manage semver for us.
+
+### Labels and Templates
+
+We try to keep things organized around here. Maintainers have a finite amount of time and are often juggling multiple things in their lives. Keeping things consistent and well labeled helps reduce the amount of concentration and effort required for us to both find and carry out work on the project. Simple things like using our templates and adding the appropriate labels may only take you a few minutes, but it can save cummulative hours worth of work for maintainers trying to digest dozens of issues.
+
+## Website
+
+### Design
+
+The website templates are maintained at https://github.com/restify/restify.github.io and are populated from the docs directory in this repo.
+
+### Releasing a change
+
+To update the documentaiton on the website to reflect the latest version of 5.x simply:
+
+```
+git clone git@github.com:restify/restify.github.io
+cd restify.github.io
+git submodule update --remote && git add _docs && git commit -m 'bump' && git push origin master
+```
+
+The website will automatically deploy itself with the new changes.
+
+### Adding a documentation page
+
+To add a new page, simply give it a [permalink](https://github.com/restify/node-restify/blob/94fe715173ffcebd8814bed7e17a22a24fac4ae8/docs/index.md) and then update [docs.yml](https://github.com/restify/restify.github.io/blob/master/_data/docs.yml) with the new permalink.