Added options.from

[yoavmmn]

WHATSUP

This feature was proposed and discussed in issue #100.

BEFORE

This was a common pattern in my and others code.

Date.now() + ms('2h')

AFTER

It's super simple now to get the milliseconds of given time.

ms('2h', { from: Date.now() });

[TooTallNate]

Thank you for the PR. I'm still not sure if I'm sold on the idea.

The AFTER code is, in fact, longer than the BEFORE version, and I think the before version is also more explicit. It's not super clear to me what the benefit of this change ends up being.

[yoavmmn]

@TooTallNate The benefit isn't huge, all you get is a more readable code.
I can see why you aren't sold on the idea, it's not a super necessary feature or anything like that. just a feature it'll be nice to have.

[TooTallNate]

Thank you for understanding @yoavmmn. I think we're going to pass on this one for now. Looking forward to future pull requests from you though!