[README] Make it very clear

Signed-off-by: Olivier Tassinari <olivier.tassinari@gmail.com>

Author: oliviertassinari

README.md

@@ -1,58 +1,3 @@
 ## ⚠️ The end of @material-ui/pickers 🙈, long live @mui/x-date-pickers
 
 See [#2157](https://github.com/mui/material-ui-pickers/issues/2157) for more details.
-
----
-
-<p align="center">
-  <a href="https://material-ui.com/" rel="noopener" target="_blank"><img width="200" src="https://material-ui-pickers.dev/static/meta-image.png" alt="Material-ui-pickers logo"></a></p>
-</p>
-
-<h1 align="center">Material UI Pickers</h1>
-
-<div align="center">
-
-Accessible, customizable, delightful date & time pickers for [@material-ui/core](https://material-ui.com/)
-
-[![npm package](https://img.shields.io/npm/v/@material-ui/pickers.svg)](https://www.npmjs.org/package/@material-ui/pickers)
-[![npm download](https://img.shields.io/npm/dm/@material-ui/pickers.svg)](https://www.npmjs.org/package/@material-ui/pickers)
-[![codecov](https://codecov.io/gh/mui/material-ui-pickers/branch/next/graph/badge.svg)](https://codecov.io/gh/mui/material-ui-pickers)
-[![Bundle Size](https://badgen.net/bundlephobia/minzip/@material-ui/pickers)](https://bundlephobia.com/result?p=@material-ui/pickers@latest)
-[![CircleCI](https://circleci.com/gh/mui/material-ui-pickers.svg?style=svg)](https://circleci.com/gh/mui/material-ui-pickers)
-[![Cypress.io tests](https://img.shields.io/badge/cypress.io-tests-green.svg?style=flat-square)](https://dashboard.cypress.io/#/projects/qow28y/runs)
-[![This project is using Percy.io for visual regression testing.](https://percy.io/static/images/percy-badge.svg)](https://percy.io/mui/material-ui-pickers)
-[![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
-
-</div>
-
-## Installation
-
-Note that this package requires `@material-ui/core` **v4**. It will not work with the old v3. Please read the [migration guide](https://material-ui-pickers.dev/guides/upgrading-to-v3) if you are updating from v2
-
-```sh
-// via npm
-npm i @material-ui/pickers
-
-// via yarn
-yarn add @material-ui/pickers
-```
-
-## Getting started
-
-[Here is instruction](https://material-ui-pickers.dev/getting-started/installation#peer-library) of how to get started with `@material-ui/pickers`.
-
-## Documentation
-
-Check out the [documentation website](https://material-ui-pickers.dev/).
-
-## Changelog
-
-The changelog is available [on GitHub](https://github.com/mui/material-ui-pickers/releases).
-
-## Contributing
-
-For information about how to contribute, see the [CONTRIBUTING](https://github.com/mui/material-ui-pickers/blob/master/CONTRIBUTING.md) file.
-
-## LICENSE
-
-The project is licensed under the terms of [MIT license](https://github.com/mui/material-ui-pickers/blob/master/LICENSE).