Update documentation to align with how things work in sb 7.0

Right now we describe the old way of starting storybook in README.md 

```
	"storybook": "start-storybook -p 6006",
	"build-storybook": "build-storybook"
```

There is a new way, though. We need to update it to use `ng run storybook:serve` and also describe how to deactivate compodoc in the meantime using "compodoc: false" in the angular.json 
