Update README.md with 1st round comments
Update README.md with 1st round comments

jiawen/Halide,kgnk/Halide,kgnk/Halide,ronen/Halide,ronen/Halide,ronen/Halide,kgnk/Halide,kgnk/Halide,kgnk/Halide,psuriana/Halide,ronen/Halide,jiawen/Halide,psuriana/Halide,jiawen/Halide,jiawen/Halide,jiawen/Halide,ronen/Halide,psuriana/Halide,ronen/Halide,psuriana/Halide,psuriana/Halide,jiawen/Halide,kgnk/Halide,jiawen/Halide,ronen/Halide,kgnk/Halide,psuriana/Halide,kgnk/Halide,psuriana/Halide,ronen/Halide