For the roster of companies producing plant-based meat alternatives, the burger is the end-all-be-all. And one company thinks they’ve got the burger that will push the meat-eating industry as we know it to the tipping point. Beyond Meat, a company based in El Segundo, just unveiled a burger so similar to the classic American burger (and far more healthful) that it’s become the first ever plant-based product sold in the meat department at Whole Foods.…