Move codes to an embed framework

- Move bundle/group identifiers to passKit/Global
- Fix Core Data
- Change Defaults to SharedDefaults

passKit/Helpers/AppError.swift

@@ -0,0 +1,40 @@
+//
+//  AppError.swift
+//  pass
+//
+//  Created by Mingshen Sun on 30/4/2017.
+//  Copyright © 2017 Bob Sun. All rights reserved.
+//
+
+import Foundation
+
+enum AppError: Error {
+    case RepositoryNotSetError
+    case RepositoryRemoteMasterNotFoundError
+    case KeyImportError
+    case PasswordDuplicatedError
+    case GitResetError
+    case PGPPublicKeyNotExistError
+    case UnknownError
+}
+
+extension AppError: LocalizedError {
+    public var errorDescription: String? {
+        switch self {
+        case .RepositoryNotSetError:
+            return "Git repository is not set."
+        case .RepositoryRemoteMasterNotFoundError:
+            return "Cannot find remote branch origin/master."
+        case .KeyImportError:
+            return "Cannot import the key."
+        case .PasswordDuplicatedError:
+            return "Cannot add the password: password duplicated."
+        case .GitResetError:
+            return "Cannot identify the latest synced commit."
+        case .PGPPublicKeyNotExistError:
+            return "PGP public key doesn't exist."
+        case .UnknownError:
+            return "Unknown error."
+        }
+    }
+}