docs: add jakubclark as a contributor (#395)

* docs: update README.md

* docs: update .all-contributorsrc

.all-contributorsrc

@@ -301,6 +301,17 @@
         "test",
         "translation"
       ]
+    },
+    {
+      "login": "jakubclark",
+      "name": "Kuba Clark",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/19486495?v=4",
+      "profile": "https://github.com/jakubclark",
+      "contributions": [
+        "code",
+        "doc",
+        "test"
+      ]
     }
   ],
   "contributorsPerLine": 7

README.md

@@ -221,6 +221,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="http://blog.unhappychoice.com"><img src="https://avatars3.githubusercontent.com/u/5608948?v=4" width="100px;" alt="Yuji Ueki"/><br /><sub><b>Yuji Ueki</b></sub></a><br /><a href="#content-unhappychoice" title="Content">🖋</a> <a href="#translation-unhappychoice" title="Translation">🌍</a></td>
     <td align="center"><a href="https://github.com/heyrict"><img src="https://avatars3.githubusercontent.com/u/25698503?v=4" width="100px;" alt="谢祯晖"/><br /><sub><b>谢祯晖</b></sub></a><br /><a href="https://github.com/starship/starship/commits?author=heyrict" title="Code">💻</a> <a href="https://github.com/starship/starship/commits?author=heyrict" title="Documentation">📖</a> <a href="#translation-heyrict" title="Translation">🌍</a> <a href="#review-heyrict" title="Reviewed Pull Requests">👀</a></td>
     <td align="center"><a href="https://twitter.com/bookun2851"><img src="https://avatars2.githubusercontent.com/u/10346162?v=4" width="100px;" alt="Kutsuzawa Ryo"/><br /><sub><b>Kutsuzawa Ryo</b></sub></a><br /><a href="#review-bookun" title="Reviewed Pull Requests">👀</a> <a href="https://github.com/starship/starship/commits?author=bookun" title="Code">💻</a> <a href="https://github.com/starship/starship/commits?author=bookun" title="Tests">⚠️</a> <a href="#translation-bookun" title="Translation">🌍</a></td>
+    <td align="center"><a href="https://github.com/jakubclark"><img src="https://avatars0.githubusercontent.com/u/19486495?v=4" width="100px;" alt="Kuba Clark"/><br /><sub><b>Kuba Clark</b></sub></a><br /><a href="https://github.com/starship/starship/commits?author=jakubclark" title="Code">💻</a> <a href="https://github.com/starship/starship/commits?author=jakubclark" title="Documentation">📖</a> <a href="https://github.com/starship/starship/commits?author=jakubclark" title="Tests">⚠️</a></td>
   </tr>
 </table>