author: //div[contains(@class, 'author_text')]/h4/text()
date: //li[@class='date']

# stripping excessive tags
strip: //div[contains(@class, 'entry_meta')]
strip: //div[contains(@class, 'single_meta')]
strip: //br[contains(@class, 'clear')]
strip: //h3[contains(., 'Komentarz')]
test_url: http://rubysfera.pl/2011/09/10-porad-o-rvm/