Typo in yahoo_stockquote.rb

[rmueck]

Hello,

i found there is a little typo in yahoo_stockquote.rb

response = http.request(Net::HTTP::Get.new("/d/quotes.csv?fb=nsac1&s=#{s}"))

should be

response = http.request(Net::HTTP::Get.new("/d/quotes.csv?f=nsac1&s=#{s}"))