Remove Yarn dependency, update packages

Author: johny

.github/workflows/check.yml

@@ -8,10 +8,10 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Install dependencies 🔧
-        run: yarn
+        run: npm install
 
       # - name: Test 🎢
-      #   run: yarn test
+      #   run: npm run test
 
       - name: Build and generate static export 🏗
-        run: yarn export
+        run: npm run export

README.md

@@ -19,17 +19,17 @@ See [Edgeware Agency][https://edgeware.agency/] to find out how we work and lear
 
 Edgeware website is built with [Next.js](https://nextjs.org/)
 
-Make sure you have Node.js and Yarn installed.
+Make sure you have Node.js
 Install the project dependencies:
 
 ```bash
-yarn
+npm install
 ```
 
 Run the local development server:
 
 ```bash
-yarn dev
+npm run  dev
 ```
 
 Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.