I have a Rails application using Rails 3.

I added `rspec-rails` to my `Gemfile`:

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

```

and then I run `bundle install`. It shows my gem list, and all rspec gems are there (core, rails, etc.).

However, when I run

```
rails g rspec:install

```

that's what it returns:

```
create  .rspec
create  spec
create  spec/spec_helper.rb

```

Although I have models and controllers in my application, it just create those files. Why isn't Rspec creating the spec files?