docs: intro

Author: hehehai

README.md

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+# Arco Vue playground
+
+![site-screenshot](./doc/site-screenshot.png)
+
+[![Netlify Status](https://api.netlify.com/api/v1/badges/2051d1bc-3eae-4b90-a3c0-c46762a8a8f1/deploy-status)](https://app.netlify.com/sites/arco-vue-playground/deploys)
+
+🥳 [look here](arco-vue-playground.netlify.app)
+
+> ‼️ arco-vue version support >= 2.27.0
+
+## project
+
+- [vue3](https://staging-cn.vuejs.org/)
+- [@vue/repl](https://github.com/vuejs/repl)
+- [arco-design](https://arco.design/)