update readme

CHANGELOG.md

-## 0.0.1
+# 0.1.0
 
-* TODO: Describe initial release.
+* Migrate files from Ğazelle to split responsabilities

README.md

-<!--
-This README describes the package. If you publish this package to pub.dev,
-this README's contents appear on the landing page for your package.
+# Durt2 Library
 
-For information about how to write a good package README, see the guide for
-[writing package pages](https://dart.dev/guides/libraries/writing-package-pages).
+## Overview
 
-For general information about developing packages, see the Dart guide for
-[creating packages](https://dart.dev/guides/libraries/create-library-packages)
-and the Flutter guide for
-[developing packages and plugins](https://flutter.dev/developing-packages).
--->
-
-TODO: Put a short description of the package here that helps potential users
-know whether this package might be useful for them.
+Durt2 is a Dart library designed for [Duniter v2s](https://git.duniter.org/nodes/rust/duniter-v2s) blockchain and cryptocurrency management. It integrates various services, including Squid GraphQL, Duniter networks use, and secure wallet functionalities, making it an all-encompassing solution for duniter v2s related operations in Dart and Flutter applications.
 
 ## Features
 
-TODO: List what your package can do. Maybe include images, gifs, or videos.
+- [Polkadart](https://pub.dev/packages/polkadart) integration for accessing Duniter blockchain functionalities.
+- GraphQL integration for querying blockchain data.
+- Wallet services including encryption and decryption of mnemonics.
+- Secure storage and retrieval of wallet information.
+- Support for multiple blockchain networks (`gdev`, `gtest`, `g1`).
 
-## Getting started
+## Getting Started
 
-TODO: List prerequisites and provide or point to information on how to
-start using the package.
+To use Durt2 in your project, you need to include it in your Dart or Flutter project's dependency list.
 
-## Usage
+### Installation
+
+1. Add Durt2 to your `pubspec.yaml` file:
+
+```yaml
+dependencies:
+    durt2: <version>
+```
+
+2. Run the following command to get the package:
+
+```bash
+flutter pub get
+```
+
+### Initialization
 
-TODO: Include short and useful examples for package users. Add longer examples
-to `/example` folder.
+To initialize the library, you need to specify the blockchain network and the endpoints for both Duniter and Squid services.
 
 ```dart
-const like = 'sample';
+import 'package:durt2/durt2.dart';
+
+void main() async {
+  await Durt2.init(
+    network: Networks.g1, // Specify the network
+    duniterEndpointsJson: '<your_duniter_endpoints_json>',
+    squidEndpointsJson: '<your_squid_endpoints_json>',
+  );
+
+  // ...
+}
 ```
 
-## Additional information
+## Usage
+
+Durt2 provides various functionalities like querying the blockchain, managing wallet info, and interacting with the Duniter network.
+You need Riverpod as state manager (you can use others state manager too for the state of your app) to use some parts of this lib.
+
+### Fetching and Displaying Account History
 
-TODO: Tell users more about the package: where to find more information, how to
-contribute to the package, how to file issues, what response they can expect
-from the package authors, and more.
+Below is an example of how to fetch and display account history in a Flutter widget.
+
+```dart
+Widget buildHistoryView() {
+  final historyAsync = ref.watch(accountHistoryProvider('5FeggKqw2AbnGZF9Y9WPM2QTgzENS3Hit94Ewgmzdg5a3LNa'));
+
+  return historyAsync.when(
+    loading: () => const Center(child: CircularProgressIndicator()),
+    error: (error, _) => Center(child: Text('Error: $error')),
+    data: (transactions) {
+      if (transactions.isEmpty) {
+        return const Center(
+          child: Text('No transactions', style: TextStyle(fontSize: 16)),
+        );
+      }
+      return ListView.builder(
+        itemCount: transactions.length,
+        itemBuilder: (context, index) {
+            final transaction = transactions[index];
+            return YourTransactionWidget(transaction);
+        },
+      ),
+    },
+  );
+}
+```