Rakefile in ripper_ruby_parser-1.4.2 vs Rakefile in ripper_ruby_parser-1.5.0

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 require 'rake/clean'
 require 'bundler/gem_tasks'
 require 'rake/testtask'
 
 namespace :test do