Gemfile in nanoc-3.8.0 vs Gemfile in nanoc-4.0.0a1

@@ -38,9 +38,10 @@
 gem 'rdiscount', platforms: [:ruby, :mswin]
 gem 'rdoc'
 gem 'redcarpet', platforms: [:ruby, :mswin]
 gem 'RedCloth'
 gem 'rouge'
+gem 'rspec'
 gem 'rubocop'
 gem 'rubypants'
 gem 'sass', '~> 3.2.2'
 gem 'slim'
 gem 'typogruby'