Minor README fixes
Minor README fixes

chrismattmann/drat,karanjeets/drat,lewismc/drat,sfrancus/drat,sfrancus/drat,chrismattmann/drat,chrismattmann/drat,lewismc/drat,sfrancus/drat,karanjeets/drat,sfrancus/drat,chrismattmann/drat,lewismc/drat,karanjeets/drat,lewismc/drat,sfrancus/drat,karanjeets/drat,lewismc/drat,chrismattmann/drat,karanjeets/drat