Updated INSTALL.md
Updated INSTALL.md

graphicore/fontbakery,graphicore/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,davelab6/fontbakery,vitalyvolkov/fontbakery,vitalyvolkov/fontbakery,vitalyvolkov/fontbakery,googlefonts/fontbakery,jessamynsmith/fontbakery,googlefonts/fontbakery,moyogo/fontbakery,graphicore/fontbakery,moyogo/fontbakery