Update README.md

README.md

@@ -100,6 +100,9 @@ document = cclutils.read('./example.xml')
 tokens = (token for paragraph in document.paragraphs()
     for sentence in paragraph.sentences()
     for token in sentence.tokens())
+    
+for token in tokens:
+    ...
 ```
 
 To avoid loading large CCL documents to RAM (DOM parsers) we can read them