“Get in losers, we’re going to buy an airline,” is the short bio next to the smiling face of Hunter Peterson, an aviation enthusiast making waves trying to disrupt the air travel industry. On Saturday, May 2, at 3 a.m., Spirit Airlines abruptly shuttered, leaving thousands of employees out of work and thousands of travelers holding unusable tickets. There was no notice or warning. One day, people were booking tickets, and the next, the budget ai…