greenwood upgrade and add import css plugin

Author: thescientist13

greenwood.config.js

@@ -1,9 +1,13 @@
+const pluginImportCss = require('@greenwood/plugin-import-css');
 const pkg = require('./package.json');
 
 module.exports = {
   title: 'My Personal Blog',
   meta: [
     { rel: 'icon', href: '/assets/favicon.ico' },
     { name: 'description', content: pkg.description } // replace the pkg.description with a custom string if you prefer
+  ],
+  plugins: [
+    ...pluginImportCss()
   ]
 };