Add @nygardk as a contributor

.all-contributorsrc

@@ -135,6 +135,15 @@
         "doc",
         "code"
       ]
+    },
+    {
+      "login": "nygardk",
+      "name": "Klaus Nygård",
+      "avatar_url": "https://avatars.githubusercontent.com/u/2855908?v=4",
+      "profile": "http://klausnygard.fi",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -226,6 +226,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://www.linkedin.com/in/paulfasola/"><img src="https://avatars.githubusercontent.com/u/1634645?v=4" width="100px;" alt=""/><br /><sub><b>Paul Fasola</b></sub></a><br /><a href="https://github.com/hipstersmoothie/storybook-dark-mode/commits?author=PaulFasola" title="Documentation">📖</a></td>
     <td align="center"><a href="https://pavelkeyzik.com"><img src="https://avatars.githubusercontent.com/u/17102399?v=4" width="100px;" alt=""/><br /><sub><b>Pavel Keyzik</b></sub></a><br /><a href="https://github.com/hipstersmoothie/storybook-dark-mode/commits?author=pavelkeyzik" title="Documentation">📖</a></td>
     <td align="center"><a href="https://dricholm.github.io/"><img src="https://avatars.githubusercontent.com/u/32329112?v=4" width="100px;" alt=""/><br /><sub><b>David Richolm</b></sub></a><br /><a href="https://github.com/hipstersmoothie/storybook-dark-mode/commits?author=dricholm" title="Documentation">📖</a> <a href="https://github.com/hipstersmoothie/storybook-dark-mode/commits?author=dricholm" title="Code">💻</a></td>
+    <td align="center"><a href="http://klausnygard.fi"><img src="https://avatars.githubusercontent.com/u/2855908?v=4" width="100px;" alt=""/><br /><sub><b>Klaus Nygård</b></sub></a><br /><a href="https://github.com/hipstersmoothie/storybook-dark-mode/commits?author=nygardk" title="Code">💻</a></td>
   </tr>
 </table>