docs: refactor document folder structure.

docs/documents/index.md

@@ -0,0 +1,11 @@
+---
+_layout: landing
+---
+
+# This is the **HOMEPAGE**.
+
+Refer to [Markdown](http://daringfireball.net/projects/markdown/) for how to write markdown files.
+
+## Quick Start Notes:
+
+1. Add images to the *images* folder if the file is referencing an image.