Missing files with rails generate cucumber:install

when ranning cucumber:install

and generate me this files
<code>
create config/cucumber.yml
create script/cucumber
chmod script/cucumber
create features/step_definitions
create features/support
create features/support/env.rb
exist lib/tasks
create lib/tasks/cucumber.rake
gsub config/database.yml
gsub config/database.yml
force config/database.yml
</code>
im searching for the path.rb inside support it didnt generate me one
my cucumber version is

cucumber (1.1.4)
cucumber-rails (1.2.1)
ruby version 1.9.2 rails 3.1.1

reading this solve my problem
https://github.com/cucumber/cucumber-rails/blob/f027440965b96b780e84e50dd47203a2838e8d7d/History.md