Todd Spangler NY Digital EditorCameo, the startup that has built a fast-growing business selling video shout-outs from celebrities (and others), is extending into a new line of fandom business.In its first acquisition, Cameo bought L.A.-based Represent, a marketing and merchandising platform that develops and operates direct-to-fan ecommerce sites for celeb clients including Jennifer Lopez, Ed Sheeran, Leonardo DiCaprio, Matthew McConaughey, Kendall Jenner and Arnold Schwarzenegger.Terms of the