Update README.md

Author: xudafeng

README.md

@@ -4,15 +4,12 @@
 
 ## Sample List
 
-- [awesome-practice-projects](//github.com/app-bootstrap/awesome-practice-projects)
-- [react-sample](//github.com/macaca-sample/react-sample)
-- [vue-sample](//github.com/macaca-sample/vue-sample)
+- [web-app-bootstrap](//github.com/app-bootstrap/web-app-bootstrap)
 - [umlplot](//github.com/xudafeng/umlplot)
 - [d3-tree](//github.com/xudafeng/d3-tree)
 - [canvas-color](//github.com/xudafeng/canvas-color)
 - [monitor.js](//github.com/pillowjs/monitor.js)
 - [wordle](//github.com/xudafeng/wordle)
-- [webpack-datahub-sample](//github.com/macaca-sample/webpack-datahub-sample)
 
 ## License