update travis config
update travis config

leafo/scssphp,dleffler/scssphp,g105b/scssphp,g105b/scssphp,webdevid/scssphp,webdevid/scssphp,kkkyyy03/scssphp,webdevid/scssphp,g105b/scssphp,leafo/scssphp,dleffler/scssphp,leafo/scssphp,dleffler/scssphp