docs: add john-kelly as a contributor for bug (#110)

* docs: update README.md [skip ci]
* docs: create .all-contributorsrc [skip ci]

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>
Co-authored-by: anderoonies <[email protected]>

Author: allcontributors[bot]

.all-contributorsrc

@@ -0,0 +1,24 @@
+{
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "contributors": [
+    {
+      "login": "john-kelly",
+      "name": "John Kelly",
+      "avatar_url": "https://avatars.githubusercontent.com/u/4268509?v=4",
+      "profile": "https://github.com/john-kelly",
+      "contributions": [
+        "bug"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "projectName": "chs-js-lib",
+  "projectOwner": "codehs",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "skipCi": true
+}

README.md

@@ -1,4 +1,7 @@
 [![npm version](https://badge.fury.io/js/chs-js-lib.svg)](https://www.npmjs.com/package/chs-js-lib)
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 
 # [The CodeHS JavaScript Library](https://codehs.github.io/chs-js-lib)
 
@@ -8,3 +11,23 @@ This library is structured as
 ## Contributing
 
 This project follows the [all-contributors](https://github.com/kentcdodds/all-contributors) specification, which recognizes contributions to open-source are about more than just code. Instructions to add yourself or your contributions are listed [here](contributing.md).
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tr>
+    <td align="center"><a href="https://github.com/john-kelly"><img src="https://avatars.githubusercontent.com/u/4268509?v=4?s=100" width="100px;" alt=""/><br /><sub><b>John Kelly</b></sub></a><br /><a href="https://github.com/codehs/chs-js-lib/issues?q=author%3Ajohn-kelly" title="Bug reports">🐛</a></td>
+  </tr>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!