Add remote theme gem

Author: aejohnson1

Gemfile

@@ -21,6 +21,7 @@ gem "github-pages", "~> 232"
 # If you have any plugins, put them here!
 group :jekyll_plugins do
   gem "jekyll-feed", "~> 0.12"
+  gem "jekyll-remote-theme"
 end
 
 # Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem