Add community documentation

[RichardLitt]

Dearest humans,

You are missing some important community files. I am adding them here for you!

Here are some things you should do manually before merging this Pull Request:

• [x] Update the Contributing guide to include any repository-specific requests, or to point to a global Contributing document.
• [x] Check the email in the Code of Conduct. We've added in "contact@vansintjan.net".
• [x] You have no package.json file checked in that I can find. Think about adding one.
• [ ] Consider adding Travis. Travis is useful not only for tests, but also for greenkeeper and semantic-release.

Note: This pull request was automatically generated by https://github.com/mntnr/build-a-space. Found an issue? Let me know!

[simonv3]

Awesome, thanks @RichardLitt!!!