(Reuters) – Apple Inc workers in Maryland voted on Saturday to join a union, becoming the first retail employees of the tech giant to unionize in the United States. More than 100 workers in Towson near Baltimore “have overwhelmingly voted to join the International Association of Machinists and Aerospace Workers,” the union said on its website. The local workers, forming the Coalition of Organized Retail Employees, “have the support of a solid majority of our coworkers,” they wrote in a letter to Apple CEO Tim Cook. “This is something we do not to go against or create conflict with our manageme…