better readme
better readme

kengruven/premailer,ionelmc/premailer,HubSpot/premailer,kengruven/premailer,lavr/premailer,industrydive/premailer,peterbe/premailer,graingert/premailer,sendwithus/premailer,industrydive/premailer,sendwithus/premailer,lavr/premailer,peterbe/premailer,BlokeOne/premailer-1,ionelmc/premailer,peterbe/premailer,BlokeOne/premailer-1,graingert/premailer