Is this a bug report?

YES

No big thing, but there is a small difference between the code in readme against the cpp file.

Line 37: filter_options(const std::string name, rs2::filter& filter);
in https://github.com/IntelRealSense/librealsense/blob/master/examples/post-processing/rs-post-processing.cpp

filter_options(const std::string name, rs2::process_interface& filter);
https://github.com/IntelRealSens

The app doesnot support in certain mobile devices. Please add the support list of devices for both applications including the opencv apk.

The python script contains an about.txt that was probably meant to be informative rather than an actual script that can execute on the camera, but attempting to run it results in an error due to the file not being executable.

This script should be written (and packaged) in such a way that the user can execute it, and see the script in action.

Reported on the Krontech forums here: [Re: Chrono