option_data in ib-ruby-0.5.15

- old
+ new

@@ -39,9 +39,9 @@
   ib.send_message :RequestMarketData, :id => id, :contract => contract
 end
 
 puts "\nSubscribed to market data"
 puts "\n******** Press <Enter> to cancel... *********\n\n"
-gets
+STDIN.gets
 puts "Cancelling market data subscription.."
 
 @market.each_pair { |id, contract| ib.send_message :CancelMarketData, :id => id }