Add examples project

Examples/Example To-Do App/SwiftUITodo/Task.swift

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+//
+//  Task.swift
+//  SwiftUITodo
+//
+//  Created by Suyeol Jeon on 03/06/2019.
+//  Copyright © 2019 Suyeol Jeon. All rights reserved.
+//
+
+import SwiftUI
+
+struct Task: Equatable, Hashable, Codable, Identifiable {
+  let id: UUID
+  var title: String
+  var isDone: Bool
+
+  init(title: String, isDone: Bool) {
+    self.id = UUID()
+    self.title = title
+    self.isDone = isDone
+  }
+}