Creating an Android app from Storyline doesn't rotate

I used a bare-bones setup:

1. Published output in a folder named 'www' (lowercase).
2. I renamed story.html to index.html in the www folder.
3. Minimal 'config.xml' file (see attached) in the root folder.
4. A 'certificates' folder in the root folder; I put an empty Notepad file called 'emtpy.txt' in this folder.
5. Minimal 'voltbuilder.json' file (see attached) in the root folder.

In my case, I am just testing Volt Builder out. I was delighted to see I could generate an Android app that I could immediately download without having to put it on the Google Play or other app store. My client isn't going to sell the app; they just need some of their users to be able to run the Storyline project without an internet connection on a mobile device. Until Articulate has a way for us to do this, Volt Builder seems like a good temporary solution.