Replace npm with yarn to install/run the webui

webui/readme.md

@@ -20,17 +20,17 @@ make clean-webui generate-webui # Generate static contents in `webui/static/` fo
 
 ## How to build (only for frontend developer)
 
-- prerequisite: [Node 12.11+](https://nodejs.org) [Npm](https://www.npmjs.com/)
+- prerequisite: [Node 12.11+](https://nodejs.org) [Yarn](https://yarnpkg.com/)
 
 - Go to the `webui/` directory
 
 - To install dependencies, execute the following commands:
 
-  - `npm install`
+  - `yarn install`
 
 - Build static Web UI, execute the following command:
 
-  - `npm run build`
+  - `yarn build`
 
 - Static contents are built in the `webui/static/` directory
 
@@ -39,7 +39,7 @@ make clean-webui generate-webui # Generate static contents in `webui/static/` fo
 - The build allows to:
   - optimize all JavaScript
   - optimize all CSS
-  - add vendor prefixes to CSS (cross-bowser support)
+  - add vendor prefixes to CSS (cross-browser support)
   - add a hash in the file names to prevent browser cache problems
   - optimize all images at build time
   - bundle JavaScript in one file
@@ -51,12 +51,12 @@ make clean-webui generate-webui # Generate static contents in `webui/static/` fo
 - Go to the `webui/` directory
 - Edit files in `webui/src/`
 - Run in development mode :
-  - `npm run dev`
+  - `yarn dev`
 
 ## Libraries
 
 - [Node](https://nodejs.org)
-- [Npm](https://www.npmjs.com/)
+- [Yarn](https://yarnpkg.com/)
 - [Webpack](https://github.com/webpack/webpack)
 - [Vue](https://vuejs.org/)
 - [Bulma](https://bulma.io)