Guardfile in mongoid-locker-1.0.1 vs Guardfile in mongoid-locker-2.0.0

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 # More info at https://github.com/guard/guard#readme
 
 guard :rspec, cmd: 'bundle exec rspec', all_on_start: true do
   require 'guard/rspec/dsl'
   dsl = Guard::RSpec::Dsl.new(self)