disable in production when running under rails

lib/better_errors/rails.rb

@@ -1,10 +1,10 @@
 module BetterErrors
   class Railtie < Rails::Railtie
     initializer "better_errors.configure_rails_initialization" do
-      middleware = Rails.application.middleware
-      middleware.use BetterErrors::Middleware
-
-      BetterErrors.application_root = Rails.root.to_s
+      unless Rails.env.production?
+        Rails.application.middleware.use BetterErrors::Middleware
+        BetterErrors.application_root = Rails.root.to_s
+      end
     end
   end
 end