made x6 faster

lib/style_scanner/sentence.rb

@@ -23,11 +23,11 @@ def adverbs
       part_of_speech("RB")
     end
 
-    def contains?(word, options = {})
-      options = {:strip_case=> true}.merge(options)
+    def contains?(word, option_modifications = {})
+      options = {:strip_case => true}.merge(option_modifications)
       text_to_scan = text
       text_to_scan = text_to_scan.downcase if options[:strip_case]
-      text_to_scan = text_to_scan.stem_verbs if options[:stem_verbs]
+      text_to_scan = stemmed_verbs(text_to_scan) if options[:stem_verbs]
       text_to_scan.match /\b#{word}\b/
     end
 
@@ -53,6 +53,10 @@ def part_of_speech(pos)
       tagged_words.select {|tagged_word| tagged_word.tag == pos }.map(&:word)
     end
 
+    def stemmed_verbs(text)
+      @stemmed_verbs ||= text.stem_verbs
+    end
+
     def tagger
       @tagger ||= Tagger.new(text)
     end

lib/style_scanner/string.rb

@@ -16,6 +16,10 @@ def titlecase
       scan(/[A-Z][a-z]*/).join(" ") 
     end
 
+    def stemmed_verbs?
+      @stemmed_verbs
+    end 
+
     private
 
     def is_a_verb?(word)