[Submission] Article: Introduction to std.datetime

[Jonathan M Davis]

Okay. According to a recent post on the Announce group, Walter wants all 
articles for the contest to be posted to the D newsgroup with [Submission] in 
the subject line, so I'm reposting the latest version of my std.datetime 
article with [Submission] in the subject line.

The article can be found in my d-programming-language.org repository: 
https://github.com/jmdavis/d-programming-language.org/tree/article_datetime

I've also submitted a pull request for it. And if you want to read it without 
building d-programming-language.org, then you can get it from here: 
http://is.gd/roLvbu

- Jonathan M Davis