Include reference to Zepto Builder
Merge pull request #989 from galymax/patch-1

Include reference to Zepto Builder
(refactor) remove redundant check
Merge pull request #997 from pomerantsev/redundant-check

(refactor) remove redundant check
Prevent `removeClass/addClass` from affecting window objects

Fixes #992, closes #996
Merge pull request #4 from madrobby/master

sync