Update README.md

README.md

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-# epay-gateway-nodejs (beta version)
-Chargily ePay Gateway (Js Package)
+# Chargily ePay Gateway Js
+
+![Chargily ePay Gateway](https://raw.githubusercontent.com/Chargily/epay-gateway-php/main/assets/banner-1544x500.png "Chargily ePay Gateway")
+
+Integrate ePayment gateway with Chargily easily.
+- Currently support payment by **CIB / EDAHABIA** cards and soon by **Visa / Mastercard** 
+- This is a **Js package**, If you are using another programing language [Browse here](https://github.com/Chargily/) or look to [API documentation](https://github.com/Chargily/epay-gateway-php/blob/master/README_API.md)
+
+# Requirements
+1. Js 2018 or later. 
+2. Get your API Key/Secret from [ePay by Chargily](https://epay.chargily.com.dz) dashboard for free
+
+# Installation
+1. Via npm (Recomended)
+```bash
+npm i chargily-epay-gateway
+```
+2. Download as ZIP
+We do not recommend this option. But be careful to download the updated versions every a while [Download](https://github.com/Chargily/epay-gateway-nodejs/releases/)