Initial commit.
Basic start to the extension - a browser button with a silly icon.
Adding a background script that runs persistently, not really doing anything yet.
Setting up an onclick listener for the button, currently just changes the icon.
Button now does more things it's not supposed to:
- reads RSS feed from MSPA
- counts number of unread pages up to 40
- opens last read page in a new tab (okay, it is supposed to do this one)
Moving RSS checking into the interval handler and properly updating the icon based on results.  Should now work properly. (We'll find out when there's a new update!)
A couple final tweaks for 1.0
Adding some comments n' stuff.