Gemfile in macros4cuke-0.5.16 vs Gemfile in macros4cuke-0.5.17

@@ -1,9 +1,11 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 gem 'cucumber', '~> 3.0'
 
 group :development do
   gem 'rake',  '>= 10.0.0' 
   gem 'rspec', '~> 3.0'
   gem 'simplecov', '>= 0.8.0'
-end
+end
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