Gemfile in nanoc-4.7.14 vs Gemfile in nanoc-4.8.0

@@ -30,9 +30,10 @@
   gem 'yard-contracts'
 end
 
 group :plugins do
   gem 'adsf'
+  gem 'asciidoctor'
   gem 'bluecloth', platforms: :ruby
   gem 'builder'
   gem 'coderay'
   gem 'coffee-script'
   gem 'compass'