Enhancement: Minify CSS when adding adding a CSS Preprocessor such as Sass

Created by: guylepage3

Enhancement: Request for pull request

Add command to minify CSS when adding Adding a CSS Preprocessor (Sass, Less etc.) to your Create React App.

Currently When adding a CSS preprocessor, the addition of the following script lines produces an App.css file that is not minified.

   "scripts": {
+    "build-css": "node-sass-chokidar src/ -o src/",
+    "watch-css": "npm run build-css && node-sass-chokidar src/ -o src/ --watch --recursive",
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --env=jsdom",

I'd like to propose adding a line to let developers know that they can simply add --output-style compressed to the watch-css line if someone would like to minify their compiled scss.