update links from sgnlp to sgnlp-models

update README.md with demo link

move vocab.pkl to tokenizer folder

Upload vocab.pkl

remove vocab.pkl

Merge branch 'main' of https://huggingface.co/aisingapore/rumour-detection-twitter

Upload model and tokenizer for rumour-detection-twitter

upload model for rumour-detection

update README.md

initial commit