docs: add btimby as a contributor for code (asyncapi#632)

Author: allcontributors[bot]

.all-contributorsrc

@@ -116,6 +116,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "btimby",
+      "name": "Ben Timby",
+      "avatar_url": "https://avatars.githubusercontent.com/u/669270?v=4",
+      "profile": "http://ben.timby.com/",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "contributorsPerLine": 3,

README.md

@@ -320,6 +320,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
   <tr>
     <td align="center"><a href="https://github.com/sebastian-palma"><img src="https://avatars2.githubusercontent.com/u/11888191?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Sebastián</b></sub></a><br /><a href="https://github.com/asyncapi/generator/commits?author=sebastian-palma" title="Code">💻</a></td>
     <td align="center"><a href="https://github.com/muenchhausen"><img src="https://avatars.githubusercontent.com/u/1210783?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Derk Muenchhausen</b></sub></a><br /><a href="https://github.com/asyncapi/generator/commits?author=muenchhausen" title="Code">💻</a></td>
+    <td align="center"><a href="http://ben.timby.com/"><img src="https://avatars.githubusercontent.com/u/669270?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Ben Timby</b></sub></a><br /><a href="https://github.com/asyncapi/generator/commits?author=btimby" title="Code">💻</a></td>
   </tr>
 </table>