Update README.md (#4)

README.md

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-# mesh-blockchain
-Blockchain integration library for mesh networks and IoT devices
+# kadena-client-api
+
+Kadena blockchain client API for microcontroller and IoT devices. Created by [Crankk.io](https://crankk.io) for interfacing with the Kadena blockchain.
+
+## Overview
+
+This library provides a lightweight client implementation for interacting with the Kadena blockchain from microcontrollers and IoT devices. It handles:
+
+- Secure communication with Kadena nodes
+- Payload encryption and hashing
+- Basic node synchronization
+- Command execution
+
+## Features
+
+- Minimal dependencies for embedded systems
+- Secure encryption using mbedTLS
+- Support for RSA and AES encryption
+- Base64 encoding/decoding
+- JSON parsing with ArduinoJson
+- Configurable blockchain endpoints
+- Basic wallet key validation
+- Command execution interface
+
+## Requirements
+
+- C++17 capable compiler
+- Arduino-compatible device
+- mbedTLS library
+- ArduinoJson library
+- Base64 library
+
+## Usage
+
+Add this repository to your PlatformIO project's `platformio.ini` selecting the desired tag:
+
+```ini
+lib_deps =
+    https://github.com/crankk/kadena-client-api.git#1.0.0
+```
+
+## Testing
+
+The library includes a test suite that can be run using PlatformIO's test runner.
+
+### Prerequisites
+- Python 3.x
+- PlatformIO CLI
+- Build essentials
+- mbedTLS development libraries
+
+### Running Tests
+
+1. Install system dependencies (platform specific):
+
+Linux:
+```bash
+sudo apt-get update
+sudo apt-get install -y build-essential
+sudo apt-get install -y libmbedtls-dev
+```
+
+macOS:
+```bash
+brew install mbedtls
+```
+
+Windows:
+```bash
+# Using vcpkg:
+vcpkg install mbedtls:x64-windows
+# Or download from: https://github.com/Mbed-TLS/mbedtls/releases
+```
+
+2. Install PlatformIO:
+```bash
+python -m pip install --upgrade pip
+pip install platformio
+```
+
+3. Run the tests:
+```bash
+pio test -e native -v
+```
+
+## Credits
+
+Created and maintained by [Crankk.io](https://crankk.io)
+
+For more information about Kadena blockchain, visit [kadena.io](https://kadena.io)