add Pranav to README and NOTICE (#31)

Author: kevinsung

NOTICE

@@ -13,6 +13,7 @@ Chengyu Dai (University of Michigan)
 E. Schuyler Fried (Harvard)
 Craig Gidney (Google)
 Brendan Gimby (University of Michigan)
+Pranav Gokhale (University of Chicago)
 Thomas Haener (ETH Zurich)
 Tarini Hardikar (Dartmouth)
 Vojtech Havlicek (Oxford)

README.rst

@@ -67,6 +67,7 @@ Authors
 `E. Schuyler Fried <https://github.com/schuylerfried>`__ (Harvard),
 `Craig Gidney <https://github.com/Strilanc>`__ (Google),
 `Brendan Gimby <https://github.com/bgimby>`__ (University of Michigan),
+`Pranav Gokhale <https://github.com/singular-value>`__ (University of Chicago),
 `Thomas Häner <https://github.com/thomashaener>`__ (ETH Zurich),
 `Tarini Hardikar <https://github.com/TariniHardikar>`__ (Dartmouth),
 `Vojtĕch Havlíček <https://github.com/VojtaHavlicek>`__ (Oxford),