Fix issue #20
Fix issue #20
ErikDubbelboer/node-sleep,trojanspike/node-sleep,kronos-pbrideau/node-sleep,trojanspike/node-sleep,kronos-pbrideau/node-sleep,kronos-pbrideau/node-sleep,ErikDubbelboer/node-sleep,ErikDubbelboer/node-sleep,trojanspike/node-sleep