update tokenizer (fix wrong bos setup)

Update generation_config.json

Update README.md

Update generation_config.json

Add llama-3 official chat template to tokenizer config

End of training

Training in progress, step 3054

Training in progress, step 2545

Training in progress, step 2036

Training in progress, step 1527

Training in progress, step 1018

Training in progress, step 509

initial commit