Add a contributing guide (#163)

CONTRIBUTING.md

@@ -0,0 +1,21 @@
+
+Contributing Guide
+==================
+
+Thanks for getting involved :tada:
+
+The Pa11y team loves to see new contributors, and we strive to provide a welcoming and inclusive environment. We ask that all contributors read and follow [our code of conduct][code-of-conduct] before joining. If you represent an organisation, then you might find our [guide for companies][companies] helpful.
+
+Our website outlines the many ways that you can contribute to Pa11y:
+
+  - [Help us to talk to our users][communications]
+  - [Help us out with design][designers]
+  - [Help us with our code][developers]
+
+
+
+[code-of-conduct]: http://pa11y.org/contributing/code-of-conduct/
+[communications]: http://pa11y.org/contributing/communications/
+[companies]: http://pa11y.org/contributing/companies/
+[designers]: http://pa11y.org/contributing/designers/
+[developers]: http://pa11y.org/contributing/developers/

README.md

@@ -82,10 +82,12 @@ The boot configurations for Pa11y Dashboard are as follows. Look at the sample J
 This can either be an object containing [Pa11y Webservice configurations][pa11y-webservice-config], or a string which is the base URL of a [Pa11y Webservice][pa11y-webservice] instance you are running separately. If using environment variables, prefix the webservice vars with `WEBSERVICE_`.
 
 
-Development
------------
+Contributing
+------------
 
-To develop Pa11y Dashboard, you'll need to clone the repo and get set up as outlined in the [setup guide](#setup).
+There are many ways to contribute to Pa11y Dashboard, we cover these in the [contributing guide](CONTRIBUTING.md) for this repo.
+
+If you're ready to contribute some code, you'll need to clone the repo and get set up as outlined in the [setup guide](#setup).
 
 You'll need to start the application in test mode with: