support edit password

pass/Views/ContentTableViewCell.swift

@@ -0,0 +1,28 @@
+//
+//  ContentTableViewCell.swift
+//  pass
+//
+//  Created by Mingshen Sun on 12/2/2017.
+//  Copyright © 2017 Bob Sun. All rights reserved.
+//
+
+import UIKit
+
+class ContentTableViewCell: UITableViewCell {
+
+    override func awakeFromNib() {
+        super.awakeFromNib()
+        // Initialization code
+    }
+
+    override func setSelected(_ selected: Bool, animated: Bool) {
+        super.setSelected(selected, animated: animated)
+    }
+    
+    func getContent() -> String? {
+        return nil
+    }
+    
+    func setContent(content: String) {    }
+
+}