docs: update README.md [skip ci]

Author: allcontributors[bot]

README.md

@@ -1,4 +1,7 @@
 # React Linked In Login Using OAuth 2.0
+<!-- 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 -->
 
 [![npm package][npm-badge]][npm]
 
@@ -188,3 +191,23 @@ Please upgrade `react-linkedin-login-oauth2` to latest version following
 npm install --save react-linkedin-login-oauth2
 ```
 ## Known issue
+
+## 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://hung.dev"><img src="https://avatars.githubusercontent.com/u/8603085?v=4?s=100" width="100px;" alt=""/><br /><sub><b>Hung Viet Nguyen</b></sub></a><br /><a href="https://github.com/nvh95/react-linkedin-login-oauth2/commits?author=nvh95" title="Code">💻</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!