docs: update README.md

Author: allcontributors[bot]

README.md

@@ -1,4 +1,5 @@
 This is code for tutorial in my blog post [Create Contact form with react and php](https://blog.bitsrc.io/how-to-build-a-contact-form-with-react-js-and-php-d5977c17fec0).
+[![All Contributors](https://img.shields.io/badge/all_contributors-1-orange.svg?style=flat-square)](#contributors)
 
 ## How to start
 
@@ -20,3 +21,15 @@ You will also see any lint errors in the console.
 <div align="center">
     <a href="https://www.paypal.me/craftcode"><img alt="Header" src="https://cdn-images-1.medium.com/max/806/1*G95uyokAH4JC5Ppvx4LmoQ.png" width="40%"></a>
 </div>
+
+## 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 -->
+<table><tr><td align="center"><a href="https://craftcode.design/"><img src="https://avatars3.githubusercontent.com/u/4549859?v=4" width="100px;" alt="Malith Priyashan"/><br /><sub><b>Malith Priyashan</b></sub></a><br /><a href="#infra-malithmcr" title="Infrastructure (Hosting, Build-Tools, etc)">🚇</a> <a href="https://github.com/malithmcr/react-php-contact-form/commits?author=malithmcr" title="Tests">⚠️</a> <a href="https://github.com/malithmcr/react-php-contact-form/commits?author=malithmcr" title="Code">💻</a></td></tr></table>
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!