Roku is ready to say Howdy.The company − which sells set-top streaming devices, smart TVs and has its own free, ad-supported streaming service, The Roku Channel − wants to make your streaming life cheaper and easier. And they're doing it by introducing a new, low-cost service that won't make you sit through commercials between episodes of your favorite old sitcoms.USA TODAY can exclusively reveal that Roku is launching Howdy on Tuesday, Aug. 5: For just $2.99 a month, Roku device users can strea...