title: Add [FIRApp configure] to your application initialization error
body: <p>I am new to coding so I am sorry if the answer to this is obvious.</p>
  
  <p>I've tried to sync my app to the Firebase server, I've installed cocoapods, added the GoogleService info plist. However, when I try to create a new user, I get the error:</p>
  
  <blockquote>
    <p>The default Firebase app has not yet been configured. Add [FIRApp configure] to your application initialization</p>
  </blockquote>
  
  <p>App Delegate </p>
  
  <pre><code>import UIKit
  import Firebase
  
  
  @UIApplicationMain
  class AppDelegate: UIResponder, UIApplicationDelegate {
  
      var window: UIWindow?
  
      private func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; ObjCBool {
  
         FIRApp.configure()
  
          return true
      }
  </code></pre>
  
  <p>Code I am using to signup users </p>
  
  <pre><code>import UIKit
  import Firebase
  import FirebaseAuth
  
  class signUpViewController: UIViewController {
  
  
  
      @IBOutlet var fullNameTextField: UITextField?
      @IBOutlet var contactNumberTextField: UITextField?
      @IBOutlet var emailTextField: UITextField?
      @IBOutlet var passwordTextField: UITextField?
      @IBOutlet var dateOfBirth: UIDatePicker?
  
  
      func  createMyAlert(title: String, message: String) {
  
          let alarm = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.alert)
          alarm.addAction(UIAlertAction(title: "ok", style: .default, handler: { (ACTION) -&gt; Void
              in self.dismiss(animated: true, completion: nil)
  
          }))
  
          self.present(alarm, animated: true, completion: nil)
      }
  
      @IBAction func continueButtonPressed(_ sender: Any) {
  
          if fullNameTextField?.text == "" || contactNumberTextField?.text == "" || emailTextField?.text == "" || passwordTextField?.text == "" {
  
              createMyAlert(title: "Error", message: "Please complete all fieds")
  
          } else {
  
          // This will create a new user
              FIRAuth.auth()?.createUser(withEmail: (self.emailTextField?.text!)!, password: (self.passwordTextField?.text!)!) { (user, error) in
  
  
          // this code will check the user isnt nil
  
                  if let u = user {
  
                      self.performSegue(withIdentifier: "createProfile", sender: self)
  
                  }
                  else
                  {
  
                      self.createMyAlert(title: "Oops", message: "Error" )
  
                  }
              }
  
          }
      }
  
  }
  </code></pre>