Train_I3D model on 40 classes

I want to train model for 40 classes I have prepared the dataset downloaded videos and processed. I have modified [WLASL_v0.3.json](https://github.com/dxli94/WLASL/blob/master/start_kit/WLASL_v0.3.json) for 40 classes now I want help in preprocessed [nslt_100.json](https://github.com/dxli94/WLASL/blob/master/code/I3D/preprocess/nslt_100.json) JSON file and class_list.txt.