Resolve npm5 warning: invalid config loglevel='notice' (https://github.com/npm/npm/issues/16862)
Resolve npm5 warning: invalid config loglevel='notice' (https://github.com/npm/npm/issues/16862)

cncjs/cncjs,cheton/piduino-grbl,cheton/piduino-grbl,cheton/cnc.js,cheton/cnc.js,cheton/cnc.js,cheton/piduino-grbl,cheton/cnc,cncjs/cncjs,cheton/cnc,cncjs/cncjs,cheton/cnc