docs: update README.md [skip ci]

README.md

@@ -1,4 +1,7 @@
 # event-messenger
+<!-- 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 -->
 
 [![License](https://img.shields.io/badge/License-BSD%202--Clause-blue.svg)](LICENSE)  
 ![Continuous integration](https://github.com/dictyBase/event-messenger/workflows/Build/badge.svg?branch=develop)
@@ -49,3 +52,23 @@ GLOBAL OPTIONS:
 ![GitHub repo size](https://img.shields.io/github/repo-size/dictyBase/event-messenger?style=plastic)
 ![GitHub code size in bytes](https://img.shields.io/github/languages/code-size/dictyBase/event-messenger?style=plastic)
 [![Lines of Code](https://badgen.net/codeclimate/loc/dictyBase/event-messenger)](https://codeclimate.com/github/dictyBase/event-messenger/code)
+
+## 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="http://cybersiddhu.github.com/"><img src="https://avatars.githubusercontent.com/u/48740?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Siddhartha Basu</b></sub></a><br /><a href="https://github.com/dictyBase/event-messenger/issues?q=author%3Acybersiddhu" title="Bug reports">🐛</a> <a href="https://github.com/dictyBase/event-messenger/commits?author=cybersiddhu" title="Code">💻</a> <a href="#content-cybersiddhu" title="Content">🖋</a> <a href="https://github.com/dictyBase/event-messenger/commits?author=cybersiddhu" title="Documentation">📖</a> <a href="#maintenance-cybersiddhu" title="Maintenance">🚧</a> <a href="#mentoring-cybersiddhu" title="Mentoring">🧑‍🏫</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!