lib/dowl.rb in dowl-0.2 vs lib/dowl.rb in dowl-0.5

@@ -7,9 +7,11 @@
 require 'dowl/class'
 require 'dowl/property'
 require 'dowl/ontology'
 require 'dowl/generator'
 
+require 'ftools'
+
 module DOWL
       
   class Namespaces
 
     OWL = RDF::Vocabulary.new("http://www.w3.org/2002/07/owl#")