docs: Add README.md version English

EN-README.md

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+# Kouran
+`kouran` is a simple CLI tool that provides information on power outages in Mauritius. 
+The data is sourced from a [dataset](https://github.com/MrSunshyne/mauritius-power-outages) created by [Sandeep Ramgolam](https://github.com/MrSunshyne).
+
+![demo](./assets/demo.jpeg)
+
+## Features
+
+* Display power outages for today.
+* View upcoming outages for tomorrow.
+* Use the all subcommand to get information on outages for both today and tomorrow.
+
+## Installation
+
+You can install `kouran` using one of the following methods:
+
+### Using Cargo
+
+If you have Rust's package manager, Cargo, installed, you can install `kouran` with:
+
+```bash
+cargo install kouran
+```
+
+### Using Homebrew
+
+For macOS users, you can install `kouran` using Homebrew:
+
+```bash
+brew install k3ii/tap/kouran
+```
+Check the release page to install the pre-built binaries.
+
+## Motivation
+
+The primary motivation behind kouran is to gain hands-on experience with building CLI tools in Rust language and interacting with APIs. While the tool is still simple, it offers a functional and helpful utility for anyone looking to stay updated on power outages across Mauritius from their terminal.