Add npm install command

close #88

Author: Jacob-Marshall

README.md

@@ -20,12 +20,18 @@ This is a Vue port for [react-content-loader](https://github.com/danilowoz/react
 
 ## Install
 
-Note: For Vue 2, use `vue-content-loader@^0.2` instead.
+⚠️ For Vue 2, use `vue-content-loader@^0.2` instead.
+
+With npm:
+
+```bash
+npm i vue-content-loader
+```
+
+Or with yarn:
 
 ```bash
 yarn add vue-content-loader
-# For Vue 2
-# yarn add vue-content-loader@^0.2
 ```
 
 CDN: [UNPKG](https://unpkg.com/vue-content-loader/) | [jsDelivr](https://cdn.jsdelivr.net/npm/vue-content-loader/) (available as `window.contentLoaders`)