docs: add khalilxl as a contributor (Open-Acidification#69)

* docs: update README.md

* docs: update .all-contributorsrc

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: Preston Carman <preston.carman@wallawalla.edu>

Author: allcontributors[bot]

.all-contributorsrc

@@ -42,6 +42,15 @@
         "code"
       ]
     },
+    {
+      "login": "khalilxl",
+      "name": "khalilxl",
+      "avatar_url": "https://avatars.githubusercontent.com/u/26103228?v=4",
+      "profile": "https://github.com/khalilxl",
+      "contributions": [
+        "code"
+      ]
+    },
     {
       "login": "atg7000",
       "name": "atg7000",

README.md

@@ -24,6 +24,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <td align="center"><a href="https://github.com/cherbel"><img src="https://avatars.githubusercontent.com/u/36583106?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Caleb Herbel</b></sub></a><br /><a href="https://github.com/Open-Acidification/TankControllerLib/commits?author=cherbel" title="Code">💻</a></td>
   </tr>
   <tr>
+    <td align="center"><a href="https://github.com/khalilxl"><img src="https://avatars.githubusercontent.com/u/26103228?v=4?s=100" width="100px;" alt=""/><br /><sub><b>khalilxl</b></sub></a><br /><a href="https://github.com/Open-Acidification/TankControllerLib/commits?author=khalilxl" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/lsaca05"><img src="https://avatars.githubusercontent.com/u/46550669?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Lucas Saca</b></sub></a><br /><a href="https://github.com/Open-Acidification/TankControllerLib/commits?author=lsaca05" title="Code">💻</a></td>
   </tr>
 </table>