JerrySievert/node-date-utils — pull request #28 by kailuowang (2013-02-14 22:24:58+00:00)
Title: The ability to add by weekdays so that user can easily get the next/previous X weekdays

For example,
var day = new Date(2013,2,13) //a Wednesday
day.addWeekdays(4) //becomes 2013/2/19 a Tuesday