今天把這個 App 更新成比較現代化的介面，擁有頁頂的工具列，也增加了縮圖顯示，還挺不錯的。另外也增加了一些簡單的說明，更貼心容易地了解怎麼操作。

I updated the app to a modern interface, having an action bar at the top. Thumbnail view is also added, quite useful. Help system with brief instructions for quick learning.