display nicely, but tersely formatted dates.
var nicedate = require('nicedate')
console.log(nicedate(Date.now()))
// just now
//one second ago
console.log(nicedate(Date.now() - 1000))
// 1s
//one week ago
console.log(nicedate(Date.now() - 1000*60*24*7))
// 1w
//etc...MIT