update README

Author: sushobhit-lt

README.md

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+# SmartUI-CLI
+
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+
+The **SmartUI-CLI** allows you to capture visual snapshots of your web applications, upload images, and run visual regression tests using [LambdaTest's SmartUI](https://www.lambdatest.com/visual-regression-testing) platform directly from the command line.
+
+- [Installation](#installation)
+- [Commands](#commands)
+- [Documentation](#documentation)
+- [Issues](#issues)
+
+## Installation
+
+```sh-session
+$ npm install smartui-cli
+```
+
+**Note:**  
+If you face any problems executing tests with SmartUI-CLI `versions >= v4.x.x`, upgrade your Node.js version to `v20.3` or above.
+
+## Commands
+- `npx smartui exec` - Capture DOM assets for visual testing across multiple browsers and resolutions.
+- `npx smartui capture` - Bulk capture static URLs for visual testing.
+- `npx smartui upload` - Upload custom images or screenshots for visual comparison.
+- `npx smartui upload-figma` - Upload Figma design images for visual comparison.
+- `npx smartui config` - Creates configuration file according to the usecase.
+
+### Documentation
+
+In addition to its core functionalities, the SmartUI CLI leverages LambdaTest's cloud infrastructure for robust, scalable visual regression testing across various browsers and devices.
+
+- [SmartUI Selenium SDK](https://www.lambdatest.com/support/docs/smartui-selenium-java-sdk) - A complete SDK to capture DOM assets for visual tests.
+- [LambdaTest Documentation](https://www.lambdatest.com/support/docs/) - Official LambdaTest documentation for SmartUI and other integrations.
+- [Bulk capturing static URLs with SmartUI](https://www.lambdatest.com/support/docs/smartui-cli/) - Documentation for capturing satatic urls in bulk with SmartUI
+- [Bring your own screenshots](https://www.lambdatest.com/support/docs/smartui-cli-upload/) - Documentation for capturing satatic urls in bulk
+- [Figma CLI](https://www.lambdatest.com/support/docs/smartui-cli-figma/) - Documentation for uploading figma components to SmartUI
+
+### Issues
+
+If you encounter problems with SmartUI-CLI, [add an issue on GitHub](https://github.com/LambdaTest/smartui-cli/issues/new).
+
+For other support issues, reach out via [LambdaTest Support](https://www.lambdatest.com/support).
+
+------
+
+[Know more](https://www.lambdatest.com/visual-regression-testing) about SmartUI and it's AI enabled comparison engines.