README.md

Exercise

1. https://github.com/cumc/handson-tutorials/tree/main/contents/finemapping
2. https://github.com/cumc/handson-tutorials/tree/main/contents/multivariate_finemapping
3. https://github.com/cumc/handson-tutorials/blob/main/contents/twas/mr_mash.ipynb
4. https://github.com/cumc/handson-tutorials/blob/main/contents/twas/twas_test.ipynb