add passcode and touch ID

pass/PasscodeLockRepository.swift

@@ -0,0 +1,42 @@
+//
+//  PasscodeRepository.swift
+//  pass
+//
+//  Created by Mingshen Sun on 7/2/2017.
+//  Copyright © 2017 Bob Sun. All rights reserved.
+//
+
+import Foundation
+import PasscodeLock
+import SwiftyUserDefaults
+
+public class PasscodeLockRepository: PasscodeRepositoryType {
+    private let passcodeKey = "passcode.lock.passcode"
+    
+    public var hasPasscode: Bool {
+        
+        if passcode != nil {
+            return true
+        }
+        
+        return false
+    }
+    
+    private var passcode: String? {
+        return Defaults[.passcodeKey]
+    }
+    
+    public func save(passcode: String) {
+        Defaults[.passcodeKey] = passcode
+        print(passcode)
+    }
+    
+    public func check(passcode: String) -> Bool {
+        return self.passcode == passcode
+    }
+    
+    public func delete() {
+        Defaults[.passcodeKey] = nil
+        print("delete")
+    }
+}