add readme

README.md

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+# rmodal-component
+
+   <p>✔️ In desktop devices in modal and in mobile device is draggable drawer.</p>
+   <p>✔️ In mobile device can close modal with dragging like instagram modals.</p>
+   <p>✔️ Lock Body scroll when modal opened.</p>
+
+
+
+[![NPM](https://img.shields.io/npm/v/rmodal-component.svg)](https://www.npmjs.com/package/rmodal-component) [![JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg)](https://standardjs.com)
+
+## Full Document
+-   [Document](https://mostafarostami72.github.io/rmodal-component/)
+## Demo
+-   [Demo](https://mostafarostami72.github.io/rmodal-component/)
+
+## Install
+
+```bash
+npm install --save rmodal-component
+```
+
+## Usage
+
+```jsx
+import React, {useState} from 'react';
+import Modal from 'rmodal-component';
+import 'rmodal-component/dist/index.css'
+
+const Example = () => {
+    const [show, setShow] = useState(false);
+
+    return (
+        <div>
+            <Modal show={show} onClose={() => setShow(false)} smModal={true} lockBodyScroll={true} modalTitle={"modal Title"}>
+                ...
+            </Modal>
+        </div>
+    );
+};
+
+export default Example;
+
+```
+
+## License
+
+MIT © [MostafaRostami72](https://github.com/MostafaRostami72)