add default type for base store adapter
add default type for base store adapter

75team/thinkjs,maxzhang/thinkjs,akira-cn/thinkjs,maxzhang/thinkjs,75team/thinkjs,snadn/thinkjs,akira-cn/thinkjs,akira-cn/thinkjs,maxzhang/thinkjs,Qihoo360/thinkjs,thinkjs/thinkjs,75team/thinkjs