Guardfile
guard :rspec, cmd: 'bundle exec rspec', all_on_start: true do
clearing :on
watch(%r{^spec/.+_spec\.rb$})
watch(%r{^spec/support/(.+)\.rb$}) { 'spec' }
watch(%r{^lib/pivot_table.rb$}) { 'spec' }
watch(%r{^lib/pivot_table/(.+)\.rb$}) { 'spec' }
watch('spec/spec_helper.rb') { 'spec' }
end