Update README.md with comprehensive documentation

README.md

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 # Ignite UI Grid Lite
 [![Node.js CI](https://github.com/IgniteUI/igniteui-grid-lite/actions/workflows/node.js.yml/badge.svg)](https://github.com/IgniteUI/igniteui-grid-lite/actions/workflows/node.js.yml)
 [![Coverage Status](https://coveralls.io/repos/github/IgniteUI/igniteui-grid-lite/badge.svg?branch=master)](https://coveralls.io/github/IgniteUI/igniteui-grid-lite?branch=master)
+[![npm version](https://badge.fury.io/js/igniteui-grid-lite.svg)](https://badge.fury.io/js/igniteui-grid-lite)
 
+Ignite UI Grid Lite is a high-performance, lightweight data grid built as a web component using [Lit](https://lit.dev/). It provides essential grid functionality with a small footprint, making it perfect for applications that need fast, efficient data visualization without the overhead of a full-featured grid.
 
-This is still a **very** early proof of concept for a web component based data grid.
+## Table of Contents
+- [Features](#features)
+- [Browser Support](#browser-support)
+- [Getting Started](#getting-started)
+- [Usage](#usage)
+- [Building the Library](#building-the-library)
+- [Running Tests](#running-tests)
+- [Documentation](#documentation)
+- [Ignite UI Grid Lite vs. Ignite UI for Angular](#ignite-ui-grid-lite-vs-ignite-ui-for-angular)
+- [Contributing](#contributing)
+- [Support](#support)
+- [License](#license)
 
-## Local Development
+## Features
 
-1. Clone the repository.
-2. Run `npm install`
-3. Run `npm run build`
-3. Play and explore the codebase.
+Ignite UI Grid Lite provides core data grid capabilities with an emphasis on performance and simplicity:
 
-## Local demo with Vite
+- **High Performance Row Virtualization** - Handles large datasets efficiently with built-in virtual scrolling
+- **Column Filtering** - Built-in column filtering capabilities
+- **Sorting** - Column sorting support for better data organization
+- **Lightweight** - Minimal bundle size for fast load times
+- **Web Standards** - Built with web components for framework-agnostic usage
+- **Modern Architecture** - Built with Lit and TypeScript for maintainability
+- **Customizable** - Flexible theming and styling options
+- **Cell Templating** - Custom cell rendering for flexible data display
+- **Header Templating** - Custom header rendering for enhanced grid headers
+- **Accessible** - Designed with accessibility in mind
 
-Run `npm start` to open the demo page in `demo/index.html`
+## Browser Support
+
+Ignite UI Grid Lite supports all modern browsers:
+
+| ![chrome] | ![firefox] | ![edge] | ![safari] | ![opera] |
+|:---:|:---:|:---:|:---:|:---:|
+| Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ | Latest ✔ |
+
+## Getting Started
+
+### Installation
+
+Install via npm:
+
+```bash
+npm install igniteui-grid-lite
+```
+
+### Quick Start
+
+1. Import the grid component in your JavaScript/TypeScript file:
+
+```typescript
+import 'igniteui-grid-lite';
+```
+
+2. Use the grid in your HTML:
+
+```html
+<igc-grid-lite>
+  <!-- Grid configuration here -->
+</igc-grid-lite>
+```
+
+3. For a complete example, check out the [demo application](./demo).
+
+## Usage
+
+For detailed usage instructions and API documentation, visit:
+- <a href="https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/grid-lite/overview">Grid Lite Overview</a>
+- [API Documentation](https://igniteui.github.io/igniteui-grid-lite/)
+
+## Building the Library
+
+### Setup
+
+Clone the repository and install dependencies:
+
+```bash
+git clone https://github.com/IgniteUI/igniteui-grid-lite.git
+cd igniteui-grid-lite
+npm install
+```
+
+### Build
+
+To build the library:
+
+```bash
+npm run build
+```
+
+This will:
+- Analyze custom elements
+- Build the TypeScript source
+- Generate API documentation
+
+### Development
+
+Start the development server with live reload:
+
+```bash
+npm start
+```
+
+This will open the demo page at `demo/index.html` with automatic rebuilding on file changes.
+
+## Running Tests
+
+Run tests once:
+
+```bash
+npm test
+```
+
+Run tests in watch mode:
+
+```bash
+npm run test:watch
+```
+
+Tests are written using [@web/test-runner](https://modern-web.dev/docs/test-runner/overview/) and [@open-wc/testing](https://open-wc.org/docs/testing/helpers/).
+
+## Documentation
+
+### API Documentation
+
+The API documentation is generated using [TypeDoc](https://typedoc.org/). To build the docs:
+
+```bash
+npm run build
+```
+
+Documentation will be available in the build output.
+
+### Additional Resources
+
+- <a href="https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/general-getting-started">Ignite UI Web Components Product Documentation</a>
+- <a href="https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/grid-lite/overview">Grid Lite Documentation</a>
+- [Web Components Guide](https://lit.dev/)
+
+## Ignite UI Grid Lite vs. Ignite UI for Angular
+
+Ignite UI Grid Lite is designed as a lightweight, open-source alternative to the full-featured <a href="https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/grids/data-grid">Ignite UI for Web Components Data Grid</a>, while allowing for an easy swap with the full-featured grid, if application needs require it.
+
+### Ignite UI Grid Lite (Open Source - MIT)
+
+**Best for:**
+- Applications requiring basic grid functionality
+- Projects where bundle size is critical
+- Framework-agnostic web applications
+- Community-driven development
+
+**Includes:**
+- Core data virtualization
+- Basic filtering and sorting
+- Lightweight and fast
+- MIT licensed and free for all use
+
+**Best for:**
+- Enterprise applications requiring advanced features
+- Complex data scenarios with editing, grouping, and aggregation
+- Applications needing professional support and SLA
+- Angular-specific optimizations
+
+**Includes:**
+- All Grid Lite features plus:
+  - Advanced filtering with query builder
+  - Excel-style column filtering
+  - Grouping
+  - Cell editing, row editing, batch editing
+  - Summaries and aggregations
+  - Excel, PDF, and CSV export
+  - Column pinning, hiding, and resizing
+  - Row selection
+  - Paging
+  - Multi-column headers and collapsible column groups
+  - Cell merging
+  - Custom row layouts
+  - Master-detail views
+  - Hierarchical grid
+  - Tree grid
+  - Pivot grid
+  - 24/5 developer support
+
+<a href="https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/general-open-source-vs-premium">Learn more about Open-Source vs Premium Ignite UI options</a>
+
+## Contributing
+
+We welcome contributions! Please see our [contributing guidelines](CONTRIBUTING.md) for details on:
+- Code of conduct
+- Development workflow
+- Submitting pull requests
+- Coding standards
+
+To contribute:
+
+1. Fork the repository
+2. Create a feature branch (`git checkout -b feature/amazing-feature`)
+3. Commit your changes (`git commit -m 'Add amazing feature'`)
+4. Push to the branch (`git push origin feature/amazing-feature`)
+5. Open a Pull Request
+
+## Support
+
+### Community Support
+
+Community support for open source usage of this product is available at:
+- [GitHub Issues](https://github.com/IgniteUI/igniteui-grid-lite/issues) - Report bugs or request features
+- [Stack Overflow](https://stackoverflow.com/questions/tagged/igniteui) - Ask questions using the `igniteui` tag
+
+### Commercial Support
+
+For professional support and access to the full Ignite UI for Web Components suite with advanced grid features:
+- Visit [Infragistics Support](https://www.infragistics.com/support)
+- Explore [Ignite UI for Web Components](https://www.infragistics.com/products/ignite-ui-web-components)
+- [Register for a trial](https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/general-getting-started)
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
+**MIT License** - Free for commercial and non-commercial use.
+
+© Copyright 2025 INFRAGISTICS. All Rights Reserved.
+
+For the commercial Ignite UI for Angular product, please visit [Infragistics Licensing](https://www.infragistics.com/legal/license).
+
+---
+
+**Built with ❤️ by [Infragistics](https://www.infragistics.com/)**
+
+<!-- Browser Logos -->
+[chrome]: https://user-images.githubusercontent.com/2188411/168109445-fbd7b217-35f9-44d1-8002-1eb97e39cdc6.png "Google Chrome"
+[firefox]: https://user-images.githubusercontent.com/2188411/168109465-e46305ee-f69f-4fa5-8f4a-14876f7fd3ca.png "Mozilla Firefox"
+[edge]: https://user-images.githubusercontent.com/2188411/168109472-a730f8c0-3822-4ae6-9f54-785a66695245.png "Microsoft Edge"
+[opera]: https://user-images.githubusercontent.com/2188411/168109520-b6865a6c-b69f-44a4-9948-748d8afd687c.png "Opera"
+[safari]: https://user-images.githubusercontent.com/2188411/168109527-6c58f2cf-7386-4b97-98b1-cfe0ab4e8626.png "Safari"