sass update vue code example

Example 1: vue js sass

# /!\ if you work with [email protected], it seems [email protected] doesn't work
# So, in terminal:
yarn add node-sass [email protected]

Example 2: vue add sass

<!--
# Run this command in the root dir of your vue project:
npm i sass-loader node-sass style-loader
-->

<!-- And later in your vue component -->
<style lang="sass">
/* Your sass code */
</style>