minor : improve C++ and Python style (#768)

models : change convert-pt-to-ggml to use .tiktoken tokenizer files (#725)

models : add usage comments to the HF convert script (#157)

models : simplify the conversion script

minor : remove one more redundant line

minor : fix double float32 conversion in python script

Add enconding parameter to vocab.json opening to fix errors

Update README.md and finalize the whisper.wasm example