Fix bootstrap sample readme
Fix bootstrap sample readme

Lemoncode/webpack-3.x-by-sample,Lemoncode/webpack-2.x-by-sample,Lemoncode/webpack-3.x-by-sample,Lemoncode/webpack-2.x-by-sample,Lemoncode/webpack-2.x-by-sample,Lemoncode/webpack-3.x-by-sample