docs: add up to date documentation for AsyncWrap#27

Merged

AndreasMadsen merged 5 commits intonodejs:masterfrom AndreasMadsen:master

Oct 17, 2015

+344-7

Commits on Oct 5, 2015

docs: add up to date documentation for AsyncWrap
AndreasMadsen
committed

Commits on Oct 8, 2015

docs: incorporate Trevis comments into the AsyncWrap documentation
AndreasMadsen
committed
docs: minor spelling corrections, thanks Stephen
AndreasMadsen
committed

Commits on Oct 14, 2015