docs: add readme

README.md

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+# Muninn Detect
+
+[![npm](https://img.shields.io/npm/v/muninn-detect?color=%234fc921)](https://www.npmjs.com/package/muninn-detect)
+[![Build Status](https://github.com/wopehq/muninn-detect/workflows/test/badge.svg?color=%234fc921)](https://github.com/teamseodo/muninn/actions)
+[![License](https://img.shields.io/badge/License-MIT-green.svg?color=%234fc921)](https://opensource.org/licenses/MIT)
+
+Muninn Detect is an assistant designed to test whether an HTML element adheres to specified rules. This allows you to define detect rules to identify HTML elements in bulk.
+
+## License
+
+Distributed under the MIT License. See LICENSE for more information.