Migrate Style Guide (#56)

* feat: migrate Style Guide (closes #24)

* fix tag

* remove "data() must be a function because vuejs/rfcs#111

Author: phanan

package.json

@@ -2,7 +2,7 @@
   "devDependencies": {
     "node-sass": "^4.13.1",
     "sass-loader": "^8.0.2",
-    "vuepress": "^1.2.0"
+    "vuepress": "^1.3.0"
   },
   "scripts": {
     "serve": "vuepress dev src",

src/.vuepress/config.js

@@ -57,7 +57,7 @@ module.exports = {
         ariaLabel: 'Documentation Menu',
         items: [
           { text: 'Guide', link: '/guide/introduction' },
-          { text: 'Styleguide', link: '/styleguide/' },
+          { text: 'Style Guide', link: '/style-guide/' },
           { text: 'Tooling', link: '/tooling/' }
         ]
       },