fix double comma issue when not using Modernizr
fix double comma issue when not using Modernizr

yuijim/generator-xh,xhtmlized/generator-xh,cdriscoll66/test,yuijim/generator-xh,xfiveco/generator-xh,xfiveco/generator-xh,xhtmlized/generator-xh,yuijim/generator-xh,cdriscoll66/test,cdriscoll66/test