如何实现Android棒棒糖应用程序的第一个发布教程:像床单，幻灯片应用程序?

I have Android 5.0 final build flashed in my Nexus 5. I noticed it has very beautiful, clean and elegant way of showing tutorial at first launch. Apps like "Sheets", "Slides" etc. I have Android 5.0 final build flashed in my Ne