Add "About" page on menu

content/about/index.md

@@ -0,0 +1,9 @@
+---
+title: About
+type: docs
+bookToC: false
+---
+
+# About
+
+{{< button href="https://twitter.com/alejandro_eu" >}}Twitter{{< /button >}}

content/menu/index.md

@@ -3,4 +3,5 @@ headless: true
 ---
 
 - [Posts]({{< relref "/posts" >}})
+- [About]({{< relref "/about" >}})
 - [RSS](/posts/index.xml)