message: Meta: mention `github-url-detection` demo in contributing.md
diff: @@ -15,7 +15,7 @@ Suggestions and pull requests are highly encouraged! Have a look at the [open is
  ## `features.add`
  -The simplest usage of `feature.add` is the following. This will be run instantly on all page-loads (but not on ajax loads):
  +The simplest usage of `feature.add` is the following. This will be run instantly on all page-loads:
  ```js
  import * as pageDetect from 'github-url-detection';
  @@ -31,7 +31,7 @@ features.add({
  screenshot: 'https://user-images.githubusercontent.com/1402241/58238638-3cbcd080-7d7a-11e9-80f6-be6c0520cfed.jpg',
  }, {
  include: [
  - pageDetect.isPR
  + pageDetect.isPR // Find which one you need on https://fregante.github.io/github-url-detection/
  ],
  awaitDomReady: false,
  init
  @@ -40,7 +40,6 @@ features.add({
  Here's an example using all of the possible `feature.add` options:
  -
  ```ts
  import React from 'dom-chef';
  import select from 'select-dom';
  