Show map for nearby stops in the main frame.
I tried to branch the code to add the osmdroid library (https://github.com/osmdroid/osmdroid), I use this library in a app I code and maintain.
I got many errors during the build. Unfortunately I am not familiar enough with BusTo code, so I gave up not to mess it.
I think the library is worth a try for the original BusTo coders.