script/rails generate rspec:install fails with 'Could not find "autotest"' message

[yachris]

Created a brand new project, added the

group :development, :test do
gem 'rspec-rails'
end

lines to my Gemfile, did:

script/rails generate rspec:install

and got:

  create  .rspec
  create  spec
  create  spec/spec_helper.rb

Could not find "autotest" in any of your source paths. Your current source paths are:
/Volumes/Blah/hacks/stonesthrow2/stones/lib/templates/rspec/install
/Users/Blah/.rvm/gems/ruby-1.8.7-p302/gems/rspec-rails2.3.0/lib/generators/rspec/install/templates

[dchelimsky]

Duplicate with #283 and #284