docs: Add comprehensive README documentation

- Added `README.md` file with detailed documentation
- Documented background, installation, usage, example, contributing, and license
- Included prerequisites for installation (Rust 1.56+ and Docker)
- Provided instructions for cloning the repository and building the project
- Added instructions for Docker deployment
- Described how to access the rendering service once it is running

Author: 7a6163

README.md

@@ -0,0 +1,56 @@
+# renderer_rs
+
+`renderer_rs` is a project written in Rust, aiming to port the [zenato/puppeteer-renderer](https://github.com/zenato/puppeteer-renderer) project. The currently implemented example is:
+
+- Rendering web content via `http://localhost:8080/html?url=http://www.google.com`.
+
+## Table of Contents
+
+- [Background](#background)
+- [Installation](#installation)
+- [Usage](#usage)
+- [Example](#example)
+- [Contributing](#contributing)
+- [License](#license)
+
+## Background
+
+The `renderer_rs` project aims to provide a web rendering service using Rust and Headless Chrome. This project ports the functionality of [zenato/puppeteer-renderer](https://github.com/zenato/puppeteer-renderer) and implements it in Rust to leverage Rust's performance and safety features.
+
+## Installation
+
+### Prerequisites
+
+- Rust 1.56+
+- Docker (optional, for containerized deployment)
+
+### Clone the Repository
+
+```bash
+git clone https://github.com/yourusername/renderer_rs.git
+cd renderer_rs
+cargo build --release
+```
+
+## Docker Deployment
+
+### Build and run the Docker container:
+
+```bash
+docker build -t renderer_rs .
+docker run -p 8080:8080 renderer_rs
+```
+
+## Usage
+
+### Once the service is running, you can access the rendering service via the following URL:
+
+```
+http://localhost:8080/html?url=http://www.google.com
+```
+
+This URL will render the Google homepage and return the HTML content.
+
+## Contributing
+
+Contributions are welcome! Please submit a pull request or create an issue to discuss.