http://techcrunch.com – The TV news soundbite is about to get a lot shorter. NowThisNews, a New York-based startup that’s looking to reinvent video journalism for the Facebook and smartphone era, is hitting SXSW with an exclusive channel on its mobile app plus a six-second startup pitch competition using Twitter’s Vine. While we haven’t really covered the company before, NowThisNews is the brainchild o (IT news)