remove the home page and releated docs sections in nav menu, list hom…

…e/index page as not in nav

mkdocs.yml

@@ -3,10 +3,6 @@ docs_dir: ./packages
 repo_url: https://github.com/lookit/lookit-jspsych
 
 nav:
-  - Home: index.md
-  - Related projects:
-      - Lookit API: https://lookit.readthedocs.io
-      - Ember Lookit Frameplayer: https://lookit.readthedocs.io/projects/frameplayer
   - Plugins and Extensions:
       - Record: record/README.md
       - Surveys: surveys/README.md
@@ -15,6 +11,8 @@ nav:
       - CHS's initJsPsych: lookit-initjspsych/README.md
       - Templates: templates/README.md
 
+not_in_nav: index.md
+
 validation:
   omitted_files: warn
   absolute_links: warn