Angular CLI is not compiling SCSS files, even when I do `ng build` or `npm run build`. 

In the `.angular-cli.json` file I've the following pieces of code required for implementing SCSS, AFAIK. 

```
  ...
  "styles": ["styles.css", "../node_modules/normalize.css/normalize.css"],
  "stylePreprocessorOptions": {
    "includePaths": ["app"]
  },
  ...
  ...

  "defaults": {
    "styleExt": "scss",
    "component": {}
  }

```

All my scss files lie inside different component folders but within `app` folder like so, `\src\app\shared\style`. Hence, the `includePaths`. 

My folder structure is something like this: 

```
MyAngularProject
    |__src
        |__app
            |__styles
                |__app.scss
            |__component1
                |__styles
                    |__component2_Style.scss
            |__component2
                |__styles
                    |__component2_Style.scss

```

How do I get my SCSS files to compile every time `ng serve` or `ng build` is called?