fixed a type and added an faq entry.
fixed a type and added an faq entry.


rpavlik/luabind,luabind/luabind,rpavlik/luabind,luabind/luabind,Wohlhabend-Networks/luabind-deboostified,luabind/luabind,alex85k/luabind,davidar/luabind,alex85k/luabind,Kazade/luabind-deboostified,Oberon00/luabind,ltjax/luabind-deboostified,Oberon00/luabind,alex85k/luabind,mdave88/luabind,mapbox/luabind,rpavlik/luabind,grafi-tt/luabind,galek/luabind-deboostified,rpavlik/luabind,alex85k/luabind,MrApplejuice/luabind,decimad/luabind-deboostified,rpavlik/luabind,luabind/luabind,plsytj/luabind,lonski/luabind