config.ru in rails-latex-2.2.0

- old
+ new

@@ -1,4 +1,5 @@
 # This file is used by Rack-based servers to start the application.
 
-require ::File.expand_path('../config/environment',  __FILE__)
-run RailsLatexDemo::Application
+require_relative 'config/environment'
+
+run Rails.application