README: update list of companies using flashls related to https://github.com/mangui/flashls/issues/459
README: update list of companies using flashls
related to https://github.com/mangui/flashls/issues/459

fixedmachine/flashls,vidible/vdb-flashls,jlacivita/flashls,tedconf/flashls,jlacivita/flashls,tedconf/flashls,hola/flashls,fixedmachine/flashls,vidible/vdb-flashls,neilrackett/flashls,neilrackett/flashls,mangui/flashls,clappr/flashls,hola/flashls,clappr/flashls,mangui/flashls