docs(quick-start): add nuxt demo repo

document/components/docs/en-US/quick-start.md

@@ -2,6 +2,7 @@
 
 - [Application Guide](https://github.com/cube-ui/cube-application-guide)
 - Have problems? See [QA](https://github.com/cube-ui/question-answer/issues)
+- In nuxt application, see [demo repo](https://github.com/cube-ui/cube-nuxt-demo)
 
 ### CLI
 

document/components/docs/zh-CN/quick-start.md

@@ -2,6 +2,7 @@
 
 - 新手教程项目：[cube-application-guide](https://github.com/cube-ui/cube-application-guide)
 - 遇到问题，先移步 [QA](https://github.com/cube-ui/question-answer/issues)
+- 使用 nuxt，请参考[示例仓库](https://github.com/cube-ui/cube-nuxt-demo)
 
 ### 脚手架