fix utf-8 cache in gbk page on ie6. Fixes #351
新增mobile的全局配置
simplify meta
fix extra placeholder request in ie6.Fixes #349.
support placeholder in ie67. Fixes #350
optimize imagezoom.update #347.
fix font-family
use DOM.attr for selector
simplify selector
support dom/selector config
support match disconnect nodes
consider other document for selector
optimize nth
add docs for selector
fix selector in ie
update
update docs
update docs
support object for each
support object in each