FIX #356: do not pickup files other than .json or .xml
FIX #356: do not pickup files other than .json or .xml

kaspermarstal/SuperElastix,SuperElastix/SuperElastix,SuperElastix/SuperElastix,SuperElastix/SuperElastix,kaspermarstal/SuperElastix,kaspermarstal/SuperElastix,SuperElastix/SuperElastix