README tweaks
README tweaks

Former-commit-id: ae58cd24cce8d27f16457cdeeda5ad6d761c7678
Former-commit-id: f266c49aa3155a9d99ed64b458b431850baeb9de
leosac/leosac,leosac/leosac,islog/leosac,islog/leosac,leosac/leosac,islog/leosac