let emailField = NSTextField.alloc().initWithFrame(NSMakeRect(0, 30, 200, 25));
let passwordField = NSSecureTextField.alloc().initWithFrame(NSMakeRect(0, 0, 200, 25));

emailField.cell().setPlaceholderString("email");
passwordField.cell().setPlaceholderString("password");

let superview = NSView.alloc().initWithFrame(NSMakeRect(0, 0, 200, 55));
superview.addSubview(emailField);
superview.addSubview(passwordField);