enable github-pages like rendering of directories that are not included in the main theme

Author: iluetkeb

Gemfile

@@ -1,18 +1,3 @@
-source "https://rubygems.org"
-ruby RUBY_VERSION
-
-gem "jekyll", "3.8.4"
-
-# to use GitHub Pages
-# gem "github-pages", group: :jekyll_plugins
-
-# If you have any plugins, put them here!
-group :jekyll_plugins do
-   gem "jekyll-feed"
-   gem "jekyll-sitemap"
-   gem "jekyll-redirect-from"
-   gem "jekyll-seo-tag"
-end
-
-# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
+source 'https://rubygems.org'
+gem 'github-pages', group: :jekyll_plugins
+#gemspec