restructure file organization

pass/Controllers/PGPKeySettingTableViewController.swift

@@ -0,0 +1,35 @@
+//
+//  PGPKeySettingTableViewController.swift
+//  pass
+//
+//  Created by Mingshen Sun on 21/1/2017.
+//  Copyright © 2017 Bob Sun. All rights reserved.
+//
+
+import UIKit
+import SwiftyUserDefaults
+
+class PGPKeySettingTableViewController: UITableViewController {
+
+    @IBOutlet weak var pgpKeyURLTextField: UITextField!
+    @IBOutlet weak var pgpKeyPassphraseTextField: UITextField!
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        pgpKeyURLTextField.text = Defaults[.pgpKeyURL]?.absoluteString
+        pgpKeyPassphraseTextField.text = Defaults[.pgpKeyPassphrase]
+    }
+    
+    override func shouldPerformSegue(withIdentifier identifier: String, sender: Any?) -> Bool {
+        if identifier == "savePGPKeySegue" {
+            if URL(string: pgpKeyURLTextField.text!)!.scheme! == "http" {
+                let alertMessage = "HTTP connection is not supported."
+                let alert = UIAlertController(title: "Cannot Save Settings", message: alertMessage, preferredStyle: UIAlertControllerStyle.alert)
+                alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.default, handler: nil))
+                self.present(alert, animated: true, completion: nil)
+                return false
+            }
+        }
+        return true
+    }
+}