Huge improvements for docs (#58)

docs/content/doc/_index.md

@@ -0,0 +1,25 @@
+---
+date: "2019-02-12:00:00+02:00"
+title: "Docs"
+draft: false
+url: "/docs"
+type: "doc"
+weight: 10
+---
+# Documentation
+
+This is the documentation for Vikunja.
+You can find available articles in the menu on the left.
+
+## About
+
+To learn more about the what, why and how, take a look at [the features page](https://vikunja.io/en/features).
+
+## Start
+
+A good starting point if you want to install and host Vikunja on your server are [the install documentation](installing)
+and [available configuration options](config-options).
+
+## Developing
+
+If you want to start contributing to Vikunja, take a look at [the development docs](development).