UPDATE: Rascal Flatts has been named as the third headlining act for the inaugural Carolina Country Music Fest, joining previously announced headliners Lady Antebellum and Eric Church. Additionally, Cole Swindell, Colt Ford, The Georgia Satellites, Brooke Eden and the Davisson Brothers Band have also been added to the growing lineup. The inaugural Carolina Country Music Festival , which features such A-list talent as Lady Antebellum, Eric Church, Hunter Hayes, Big & Rich and many more, comes to Myrtle Beach's shores and boardwalk beginning June…