Update README.md, .gitlab-ci.yml, mkdocs.yml files

.gitlab-ci.yml

@@ -4,8 +4,8 @@ before_script:
   - pip install mkdocs
   # Add your custom theme if not inside a theme_dir
   # (https://github.com/mkdocs/mkdocs/wiki/MkDocs-Themes)
-  # - pip install mkdocs-material
-  - pip install mkdocs-bootstrap386
+  - pip install mkdocs-material
+  # - pip install mkdocs-bootstrap386
 
 pages:
   script: