bug: AssertionError if using README instructions to load rwth_phoenix2014_t: "Video fps must be divisible by custom fps, when loading poses."

[cleong110]

https://colab.research.google.com/drive/1VDSHvoslxzIcb6mgEEcd3V89TqnRLAC-?usp=sharing

^ screenshot. Here I've edited the pose_feature.py code to output the actual stride value.

I think I've traced the issue back to here:
https://github.com/sign-language-processing/datasets/blob/master/sign_language_datasets/datasets/rwth_phoenix2014_t/rwth_phoenix2014_t.py#L74

 25 / self._builder_config.fps

This gives 25/12= 2.083333333.

If I comment the fps=12 out it does not crash.

The version that was installed: sign_language_datasets-0.2.0-py3-none-any.whl

[AmitMY]

Makes sense. we will need to change the example in the README to 12.5