example/example.rb in human_duration-2.0.1 vs example/example.rb in human_duration-2.0.2

@@ -1,5 +1,6 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 require 'human_duration'
 
 test_value = [-10, 0, 9, 98, 987, 987_6, 987_65, 987_654, 987_654_3, 987_654_32, 987_654_321]