Guardfile in dribbble-1.2.0 vs Guardfile in dribbble-2.0.0

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
+
 guard :rspec, cmd: 'bundle exec rspec' do
-  watch(/^spec\/.+_spec\.rb$/)
-  watch(/^lib\/(.+)\.rb$/)     { |m| "spec/lib/#{m[1]}_spec.rb" }
+  watch(%r{^spec/.+_spec\.rb$})
+  watch(%r{^lib/(.+)\.rb$}) { |m| "spec/lib/#{m[1]}_spec.rb" }
   watch('spec/spec_helper.rb') { :rspec }
 end