docs: update readme

Author: Ebedthan

README.md

@@ -1,18 +1,36 @@
-# chaoscoder
+# 🧬 chaoscoder
 
-*DNA Sequence encoding, decoding and analysis using (Integer) Chaos Game Representation*
+**DNA sequence encoding, decoding, and analysis using (Integer) Chaos Game Representation**
 
-[![Continuous Integration](https://github.com/Ebedthan/chaoscoder/actions/workflows/ci.yml/badge.svg)](https://github.com/Ebedthan/chaoscoder/actions/workflows/ci.yml)
+[![CI](https://github.com/Ebedthan/chaoscoder/actions/workflows/ci.yml/badge.svg)](https://github.com/Ebedthan/chaoscoder/actions/workflows/ci.yml)
 [![codecov](https://codecov.io/gh/Ebedthan/chaoscoder/branch/main/graph/badge.svg?token=K7VN5TH6EZ)](https://codecov.io/gh/Ebedthan/chaoscoder)
-<a href="https://github.com/Ebedthan/chaoscoder/blob/master/LICENSE">
-    <img src="https://img.shields.io/badge/license-MIT-blue?style=flat">
-</a>
-<br/>
+[![License: MIT](https://img.shields.io/badge/license-MIT-blue?style=flat)](https://github.com/Ebedthan/chaoscoder/blob/master/LICENSE)
 
-## 🗺️ Overview
-`chaoscoder` implement [integer chaos game representation (iCGR) algorithm](https://www.liebertpub.com/doi/abs/10.1089/cmb.2018.0173) for DNA sequence encoding and decoding. `chaoscoder` is the first complete implementation of the algorithm in a bioinformatic tool aiming at users. It also add to the original algorithm a output file format which is a `zst` compressed JSON file containing the 3 integers of 100bp subsequences of the supplied sequence. This allow fast encoding and decoding.
+---
+
+## 🌟 Overview
+
+`chaoscoder` is a high-performance Rust tool for transforming DNA sequences into visual or numerical formats using **Chaos Game Representation (CGR)** and its improved version, **Integer Chaos Game Representation (iCGR)**. It is the **first user-oriented implementation** of iCGR, supporting encoding, decoding, visualization, and comparison workflows.
+
+### ✨ Features
+
+- ✅ **iCGR Encoding/Decoding** of DNA sequences using a robust, lossless integer-based method
+- ✅ **Efficient block-based encoding** for long sequences (100 bp windows)
+- ✅ **CGR image generation** from DNA sequences
+- ✅ **Similarity analysis** using the [DSSIM algorithm](https://github.com/kornelski/dssim) for comparing CGR images
+
+---
+
+## 🚀 Installation
+
+You’ll need a [Rust](https://rust-lang.org/tools/install) toolchain (`stable` channel).
+
+```bash
+git clone https://github.com/Ebedthan/chaoscoder.git
+cd chaoscoder
+cargo build --release
+```
 
-`chaoscoder` also implements [chaos game representation (CGR) of DNA sequence](https://academic.oup.com/nar/article-abstract/18/8/2163/2383530) in a fast tool that draw the representation of a sequence and can compare the CGR image using the [DSSIM algorithm](https://github.com/kornelski/dssim/).
 
 ## Installation
 
@@ -22,35 +40,42 @@ cd chaoscoder
 cargo build --release
 ```
 
-## User guide
+## 🛠️ Usage
+
+Here are the main commands available
 
 ```bash
-# Encoding DNA sequence into integer chaos game representation
+# Encode a FASTA sequence to iCGR format
 chaoscoder encode seq.fa
 
-# Decoding integer chaos game representation into DNA sequence
+# Decode an iCGR file back to the original sequence
 chaoscoder decode seq.icgr
 
-# Draw chaos game representation of DNA sequence
+# Generate a CGR image from a DNA sequence
 chaoscoder draw seq.fa
 
-# Compare multiple chaos game representation image using DSSIM
+# Compare CGR images in a folder using DSSIM
 chaoscoder compare images_dir
 ```
 
 For full details, do `chaoscoder -h`.
 
-### Requirements
-- [Rust](https://rust-lang.org) in stable channel
+## 📦 Requirements
+
+Rust ≥ 1.82.0 (minimum supported version)
+Optional: fontconfig and pkg-config (for CGR rendering, may require system dependencies)
 
 
 ### Minimum Rust version policy
 This crate's minimum supported `rustc` version is `1.82.0`.
 
 
-### Bugs
-Submit problems or requests to the [Issue Tracker](https://github.com/Ebedthan/chaoscoder/issues).
+### 🐛 Bugs & Feedback
+
+Found a bug? Have a feature request?
+Open an issue on the GitHub [Issue Tracker](https://github.com/Ebedthan/chaoscoder/issues).
 
 
-### License
-Licensed under the MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT).
+### 📄 License
+This project is licensed under the MIT License.
+See [LICENSE-MIT](LICENSE-MIT) (or [http://opensource.org/licenses/MIT](http://opensource.org/licenses/MIT)) for details.