ke_test v1.0.11

npx运行时，会自动寻找可执行文件

1. 在当前package里 node_modules/.bin
2. 环境变量$PATH
3. 远程安装

eg: webpack 4.0

• node_modules/.bin/webpack
• npm i webpack-cli -g
• package.json scripts ( "build": "webpack")
• npx webpack

eg: create-react-app

• npx create-react-app my-app