Added title as per the new Science requirements.

[barendt]

I separated out the article-journal type and added a title as that is now required by Science.

[bdarcus]

Just to clarify, are you really adding a title for article-journal, or just modifying punctuation around it? Any chance you can provide a link here to show the new requirement?

Thanks!

[barendt]

I'm doing both. I added the title for both article-journal and everything caught by that final else. The punctuation is set differently because Science needs a comma after the title for articles, but I didn't want a comma after the title in a note I also had as a reference. (If you can point me in the direction of a better way to handle that, let me know and I'd be happy to update).

Here is a link to the reference guidelines from Science: http://www.sciencemag.org/site/feature/contribinfo/prep/res/refs.xhtml

The importants bits are the note at the very top of the page and the examples near the bottom.