Guardfile in git_helper-3.0.1 vs Guardfile in git_helper-3.1.0

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