Add appraisal for Rails 4.1
Disable spring preloader when generating rails app
Fix ActionController::Integration deprecations

ActionController::Integration has been deprecated in Rails 4.0 and
was removed in Rails 4.1. User ActionDispatch::Integration instead.
Fix ammeter unitialized constant Rails::VERSION
Try fixing specs by downgrading ammeter to pre 1.0
Merge pull request #287 from felixbuenemann/rails-4-1-support

Rails 4.1 Support