Add high-level documentation

https://nostr-ruby.com

docs/index.md

@@ -4,22 +4,41 @@ layout: home
 
 hero:
   name: "Nostr"
-  text: "Ruby gem documentation"
-  tagline: My great project tagline
+  text: "Ruby"
+  tagline: "The Nostr protocol implemented in a Ruby gem."
   actions:
     - theme: brand
-      text: Markdown Examples
-      link: /markdown-examples
+      text: Getting Started
+      link: /getting-started/overview
     - theme: alt
-      text: API Examples
-      link: /api-examples
+      text: View on Github
+      link: https://github.com/wilsonsilva/nostr
+    - theme: alt
+      text: View on RubyDoc
+      link: https://www.rubydoc.info/gems/nostr
+    - theme: alt
+      text: View on RubyGems
+      link: https://rubygems.org/gems/nostr
 
 features:
-  - title: Feature A
-    details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
-  - title: Feature B
-    details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
-  - title: Feature C
-    details: Lorem ipsum dolor sit amet, consectetur adipiscing elit
+  - title: Asynchronous
+    details: Non-blocking I/O for maximum performance.
+    icon: ⚡
+  - title: Lightweight
+    details: Minimal runtime dependencies.
+    icon: 🪶
+  - title: Intuitive
+    details: The API mirrors the Nostr protocol specification domain language.
+    icon: 💡
+  - title: Fully documented
+    details: All code is documented from both the maintainer's as well as the consumer's perspective.
+    icon: 📚
+  - title: Fully tested
+    details: All code is tested with 100% coverage.
+    icon: 🧪
+  - title: Fully typed
+    details: All code is typed with <a href="https://rubygems.org/gems/rbs" target="_blank">RBS</a> with the help of <a href="https://rubygems.org/gems/typeprof" target="_blank">TypeProf</a>. Type correctness is enforced by <a href="https://rubygems.org/gems/steep" target="_blank">Steep</a>.
+    icon: ✅
+
 ---