Cleaning up docs

mkdocs.yml

@@ -1,7 +1,11 @@
 site_name: jrnl
-theme: readthedocs
+theme:
+  name: readthedocs
+  custom_dir: docs/theme
+  static_templates:
+      - index.html
 extra_css:
-    - https://fonts.googleapis.com/css?family=Merriweather|Open+Sans
+    - https://fonts.googleapis.com/css?family=Open+Sans:300,600
     - assets/theme.css
     - assets/highlight.css
 markdown_extensions:
@@ -9,3 +13,11 @@ markdown_extensions:
 repo_url: https://github.com/jrnl-org/jrnl/
 site_author: Manuel Ebert
 site_description: Never Worry about Money Again.
+nav:
+  - Overview: overview.md
+  - Quickstart: installation.md
+  - Basic Usage: usage.md
+  - Encryption: encryption.md
+  - Import and Export: export.md
+  - Advanced Usage: advanced.md
+  - Recipes: recipes.md