Fixed specs now that serialize no longer returns the package
Fixed specs now that serialize no longer returns the package

moscn/activeadmin-axlsx,studentcompetitions/activeadmin-axlsx,toothfairy/activeadmin-axlsx,antob/activeadmin-axlsx,hyperoslo/activeadmin-axlsx,owhat/activeadmin-axlsx,randym/activeadmin-axlsx,ivannovosad/activeadmin-axlsx