Adding Twitter button (#5415)

Adding Twitter button

Co-authored-by: Junaid <86780488+jdevcs@users.noreply.github.com>
Co-authored-by: Nikos Iliakis <nikoulai@users.noreply.github.com>

README.md

@@ -4,7 +4,7 @@
 
 # web3.js - Ethereum JavaScript API
 
-[![NPM Package Downloads][npm-image-downloads]][npm-url] [![cdnhits][cdnhits-image]][cdnhits-url] [![Discord][discord-image]][discord-url] [![StackExchange][stackexchange-image]][stackexchange-url] [![NPM Package Version][npm-image-version]][npm-url] [![Build Status][actions-image]][actions-url]  [![Coverage Status][coveralls-image]][coveralls-url] [![Lerna][lerna-image]][lerna-url] [![Netlify Status][netlify-image]][netlify-url] [![GitPOAP Badge][gitpoap-image]][gitpoap-url]
+[![NPM Package Downloads][npm-image-downloads]][npm-url] [![cdnhits][cdnhits-image]][cdnhits-url] [![Discord][discord-image]][discord-url] [![StackExchange][stackexchange-image]][stackexchange-url] [![NPM Package Version][npm-image-version]][npm-url] [![Build Status][actions-image]][actions-url]  [![Coverage Status][coveralls-image]][coveralls-url] [![Lerna][lerna-image]][lerna-url] [![Netlify Status][netlify-image]][netlify-url] [![GitPOAP Badge][gitpoap-image]][gitpoap-url] [![Twitter][twitter-image]][twitter-url]
 
 #####  [Web3.js 4.x][4x-release] has been released. Checkout 4.x [API documentation and migration guide][4xdoc] for testing, early feedback and contributions. 
 
@@ -298,6 +298,8 @@ This project adheres to the [Release Guidelines](./REVIEW.md).
 [waffle-url]: https://waffle.io/ethereum/web3.js
 [discord-image]: https://img.shields.io/discord/593655374469660673?label=Discord&logo=discord&style=flat
 [discord-url]:  https://discord.gg/pb3U4zE8ca
+[twitter-image]: https://img.shields.io/twitter/follow/web3_js?label=web3_js&style=social
+[twitter-url]:  https://twitter.com/web3_js
 [lerna-image]: https://img.shields.io/badge/maintained%20with-lerna-cc00ff.svg
 [lerna-url]: https://lerna.js.org/
 [netlify-image]: https://api.netlify.com/api/v1/badges/1fc64933-d170-4939-8bdb-508ecd205519/deploy-status