如执行rails generate integration_test authentication_pages

DEPRECATION WARNING: config.whiny_nils option is deprecated and no longer works. (called from block in <top (required)> at /home/johnlu/rails_projects/mysampleapp/config/environments/development.rb:10)
config.eager_load is set to nil. Please update your config/environments/*.rb files accordingly:

  * development - set it to false
  * test - set it to false (unless you use a tool that preloads your test environment)
  * production - set it to true

      invoke  rspec
DEPRECATION WARNING: Model based mass assignment security has been extracted
out of Rails into a gem. Please use the new recommended protection model for
params or add `protected_attributes` to your Gemfile to use the old one.

To disable this message remove the `whitelist_attributes` option from your
`config/application.rb` file and any `mass_assignment_sanitizer` options
from your `config/environments/*.rb` files.

See http://guides.rubyonrails.org/security.html#mass-assignment for more information.

DEPRECATION WARNING: The Active Record auto explain feature has been removed.

To disable this message remove the `active_record.auto_explain_threshold_in_seconds`
option from the `config/environments/*.rb` config file.

See http://guides.rubyonrails.org/4_0_release_notes.html for more information.

具体要设置哪些参数呢？ Ubuntu12.04 32 位