Description:

Generates a base spec_helper.rb for inclusion in the various other versions.
If a SPEC_TYPE is specified a specific helper for that type will be generated.

Example:

rails generate harness_spec_helper

This will create:
  spec/spec_helper.rb
  spec/support/.keep
  .rspec

Example:

rails generate harness_spec_helper models

This will create:
  spec/spec_helper.rb
  spec/support/.keep
  .rspec
  spec/models_spec_helper.rb
  spec/support_models/.keep
  spec/models/.keep
  app/models/.keep