@IBOutlet weak var signupUsername: UITextField!
@IBOutlet weak var signupPassword: UITextField!
@IBOutlet weak var signupConfirmPassword: UITextField!
@IBAction func signup(sender: AnyObject) {



if signupPassword.text != signupConfirmPassword.text
    {
        let alert : UIAlertView = UIAlertView(title: "Oops!", message: "Your Username or Password is incorrect.",
                                              delegate: nil, cancelButtonTitle: "OK")
        alert.show()
    }

}

@IBOutlet weak var username: UITextField!
@IBOutlet weak var password: UITextField!
@IBAction func login(sender: AnyObject) {



    if username.text == signupUsername.text && password.text == signupPassword.text
    {
       self.performSegueWithIdentifier("segue", sender: nil)
    }
    else
    {
        let alert : UIAlertView = UIAlertView(title: "Oops!", message: "Your Username or Password is incorrect.",
                                              delegate: nil, cancelButtonTitle: "OK")
        alert.show()
    }
}