Update tox.ini
Update tox.ini

add E741 and F541 to flake8 ignore list so TravisCI linting doesn't fail

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