feat: setup documentation structure (#61)

apps/docs/pages/_meta.json

@@ -1,11 +1,35 @@
 {
-  "index": "Introduction",
-  "what-is-classroomio": "What is ClassroomIO?",
-  "getting-started": "Getting Started",
+  "-": {
+    "type": "separator",
+    "title": "Introduction"
+  },
+  "index": "Welcome",
+  "quickstart": "Quick Start",
+  "--": {
+    "type": "separator",
+    "title": "Core Features"
+  },
+  "organization": "Organization",
+  "course": "Course",
+  "studentdashboard": "Student Dashboard",
+  "community": "Community",
+  "audience": "Audience",
+  "---": {
+    "type": "separator",
+    "title": "Guides"
+  },
+  "contributorguides": "Contributor Guides",
+  "howtoguides": "How To Guides",
   "contact": {
     "title": "Contact ↗",
     "type": "page",
     "href": "https://twitter.com/classroomio",
     "newWindow": true
+  },
+  "demo": {
+    "title": "Demo ↗",
+    "type": "page",
+    "href": "https://dub.sh/ciodemo",
+    "newWindow": true
   }
 }