Behaviour Driven Development is well known in the Rails development community and I've decided to use it in my re-write of Proman. Following the instructions in Chapter 20 of the 13th beta of http://www.pragprog.com/titles/achbd/the-rspec-book, I installed the necessary gems (version numbers are the values at time of installation):

sudo gem install rspec --version 1.3.0
sudo gem install rspec-rails --version 1.3.2
sudo gem install cucumber --version 0.6.3
sudo gem install cucumber-rails --version 0.3.0
sudo gem install database_cleaner --version 0.5.0
sudo gem install webrat --version 0.7.0
sudo gem install selenium-client --version 1.2.18

I then installed rspec and cucumber in my new Proman 3 project:

$ cd ~/dev/Proman-3
$ mkdir lib
$ mkdir tasks
$ ./script/generate rspec

Configuring rspec and rspec-rails gems in config/environments/test.rb ...

  exists  lib/tasks
  create  lib/tasks/rspec.rake
  create  script/autospec
  create  script/spec
  create  spec
  create  spec/rcov.opts
  create  spec/spec.opts
  create  spec/spec_helper.rb

$ ./script/generate cucumber --rspec --webrat
    /usr/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/rails/gem_dependency.rb:119:Warning: Gem::Dependency#version_requirements is deprecated and will be removed on or after August 2010.  Use #requirement
           force  config/database.yml
          create  config/cucumber.yml
          create  config/environments/cucumber.rb
          create  script/cucumber
          create  features/step_definitions
          create  features/step_definitions/web_steps.rb
          create  features/support
          create  features/support/paths.rb
          create  features/support/env.rb
          exists  lib/tasks
          create  lib/tasks/cucumber.rake

I committed the changes and created a tag rspeced.