Add a logger class to the simple print statements

2_simple_logger_class.swift

class Logger {

  func logSomeImportantAction() {
    print("The server has completed some important action.")
  }

  func logAnotherImportantAction() {
    print("The server has completed another important action.")
  }

}

class FakeServer {

  var logger = Logger()

  func run() {
    someImportantAction()
    logger.logSomeImportantAction()
    anotherImportantAction()
    logger.logAnotherImportantAction()
  }

  private func someImportantAction() -> Void {
    print("This is some important action!")
  }

  private func anotherImportantAction() -> Void {
    print("This is another important action!")
  }

}

var server = FakeServer()
server.run();