to increase coverage use --ghm and --json on travis
to increase coverage use --ghm and --json on travis

(fix issue #995)

moyogo/fontbakery,graphicore/fontbakery,moyogo/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,graphicore/fontbakery,googlefonts/fontbakery,googlefonts/fontbakery,graphicore/fontbakery