Returns a simple relative time string.
Usage Examples
// within the last minute == 'Just now' // within the last hour == '16m' // within the last hour == '2h' // within the last 7 days == '4d' // over 7 days ago gives a simple date == 'Jul 20' // over half a year ago adds the year == 'Jul 4, 2014'
License
WTFPL