Update members.csv

_data/members.csv

@@ -6,6 +6,7 @@ Hila Gonen,convergence_of_kinkajou.jpg,https://u.cs.biu.ac.il/~gonenhi/,UW postd
 Nikita Haduong,shiver_of_sharks.jpg,http://ark.cs.washington.edu,UW Ph.D. student
 Yushi Hu,streak_of_tigers.jpg,https://yushi-hu.github.io/,UW Ph.D. student
 Phillip Keung,skein_of_geese.jpg,https://www.amazon.science/author/phillip-keung,UW Ph.D. student
+Sachin Kumar,,https://sites.google.com/view/sachinkumar,AI2/UW postdoc
 Alisa Liu,herd_of_cows.jpg,https://alisawuffles.github.io/,UW Ph.D. student
 Rahul Nadkarni,skulk_of_foxes.jpg,https://homes.cs.washington.edu/~rahuln,UW Ph.D. student
 Sofia Serrano,implausibility_of_gnus.jpg,https://homes.cs.washington.edu/~sofias6/,UW Ph.D. student