I have briefly checked the create /library folder and here are my questions and questinable Todos.
1. What is resources in the library for? (/library/res)
2. What is /library/out/production for? Is not it an artifact from the sample?
3. What is /ic_launcher-web.png image for?
4. What we need ProGuard for in the project? (/proguard-project.txt, /project.properties)
5. I think we need to remove the "/library/src/com/yandex" folder, because Yandex store is handled as an IOpenStore
6. I think we need to remove ".DS_Store" files from GitHub (/library/src/org/.DS_Store, /library/src/org/onepf/.DS_Store)
7. Update /library/src/org/onepf/oms/Appstore.java to add methods that were added to IOpenAppstore.aidl (getProductPageIntent, getRateItPageIntent, etc)
8. Check //ToDo comments and convert them to GitHub issues