docs: add @xarguments as a contributor

Author: tunnckoCore

.all-contributorsrc

@@ -66,6 +66,18 @@
         "ideas",
         "maintenance"
       ]
+    },
+    {
+      "login": "xarguments",
+      "name": "Xargs",
+      "avatar_url": "https://avatars2.githubusercontent.com/u/40522463?v=4",
+      "profile": "https://github.com/xarguments",
+      "contributions": [
+        "question",
+        "bug",
+        "code",
+        "maintenance"
+      ]
     }
   ]
 }

README.md

@@ -400,6 +400,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://tunnckoCore.com"><img src="https://avatars3.githubusercontent.com/u/5038030?v=4" width="100px;" alt=""/><br /><sub><b>Charlike Mike Reagent</b></sub></a><br /><a href="https://github.com/node-formidable/node-formidable/issues?q=author%3AtunnckoCore" title="Bug reports">🐛</a> <a href="#infra-tunnckoCore" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="#design-tunnckoCore" title="Design">🎨</a> <a href="https://github.com/node-formidable/node-formidable/commits?author=tunnckoCore" title="Code">💻</a> <a href="https://github.com/node-formidable/node-formidable/commits?author=tunnckoCore" title="Documentation">📖</a> <a href="#example-tunnckoCore" title="Examples">💡</a> <a href="#ideas-tunnckoCore" title="Ideas, Planning, & Feedback">🤔</a> <a href="#maintenance-tunnckoCore" title="Maintenance">🚧</a> <a href="https://github.com/node-formidable/node-formidable/commits?author=tunnckoCore" title="Tests">⚠️</a></td>
     <td align="center"><a href="https://github.com/kedarv"><img src="https://avatars1.githubusercontent.com/u/1365665?v=4" width="100px;" alt=""/><br /><sub><b>Kedar</b></sub></a><br /><a href="https://github.com/node-formidable/node-formidable/commits?author=kedarv" title="Code">💻</a> <a href="https://github.com/node-formidable/node-formidable/commits?author=kedarv" title="Tests">⚠️</a> <a href="#question-kedarv" title="Answering Questions">💬</a> <a href="https://github.com/node-formidable/node-formidable/issues?q=author%3Akedarv" title="Bug reports">🐛</a></td>
     <td align="center"><a href="https://github.com/GrosSacASac"><img src="https://avatars0.githubusercontent.com/u/5721194?v=4" width="100px;" alt=""/><br /><sub><b>Walle Cyril</b></sub></a><br /><a href="#question-GrosSacASac" title="Answering Questions">💬</a> <a href="https://github.com/node-formidable/node-formidable/issues?q=author%3AGrosSacASac" title="Bug reports">🐛</a> <a href="https://github.com/node-formidable/node-formidable/commits?author=GrosSacASac" title="Code">💻</a> <a href="#financial-GrosSacASac" title="Financial">💵</a> <a href="#ideas-GrosSacASac" title="Ideas, Planning, & Feedback">🤔</a> <a href="#maintenance-GrosSacASac" title="Maintenance">🚧</a></td>
+    <td align="center"><a href="https://github.com/xarguments"><img src="https://avatars2.githubusercontent.com/u/40522463?v=4" width="100px;" alt=""/><br /><sub><b>Xargs</b></sub></a><br /><a href="#question-xarguments" title="Answering Questions">💬</a> <a href="https://github.com/node-formidable/node-formidable/issues?q=author%3Axarguments" title="Bug reports">🐛</a> <a href="https://github.com/node-formidable/node-formidable/commits?author=xarguments" title="Code">💻</a> <a href="#maintenance-xarguments" title="Maintenance">🚧</a></td>
   </tr>
 </table>