docs(readme): Update README.md

Add list for install options

Author: apertureless

README.md

@@ -33,9 +33,8 @@ If you're looking for v1 check this [branch](https://github.com/apertureless/vue
 
 ## Install
 
-Yarn install: `yarn add vue-chartjs chart.js`
-
-Npm install: `npm install vue-chartjs chart.js --save`
+- **yarn** install: `yarn add vue-chartjs chart.js`
+- **npm** install: `npm install vue-chartjs chart.js --save`
 
 Or if you want to use it directly in the browser add