README.md: a few updates and rewording
README.md: a few updates and rewording

tkrugg/deliteful,kitsonk/deliteful,harbalk/deliteful,tkrugg/deliteful,cjolif/deliteful,EAlexRojas/deliteful,brunano21/deliteful,EAlexRojas/deliteful,kitsonk/deliteful,cjolif/deliteful,brunano21/deliteful,harbalk/deliteful