Update "The Team" link to pull from astropy repo

This PR implements the approach discussed in #19 - the "The Team" page is now pulled from the astropy repo so we don't have to keep it up to date here separately.  You can see the result at http://eteq.github.com/astropy-website/ (or http://eteq.github.com/astropy-website/team.html for the author list page)