more doc on callback management
more doc on callback management

alaska/go-ircevent,DanielOaks/girc-go,dainis/go-ircevent,phone/go-ircevent,Elemental-IRCd/irc,HenrySlawniak/go-ircevent,SeanThomasWilliams/go-ircevent,pratikmallya/go-ircevent,oniichaNj/go-ircevent