Fix? for issue 21 - getting exception creating Rally object with 1.0.0

Hi - this incorporates the patch I supplied in the comment of 2014/5/30 around 5:50pm EDT.

I've done limited testing against two workspaces. One has 13 projects, total, 9 open. The other has 22 total, 11 open. I looked up a single user by username. I also pulled 34 stories from one of the open projects to ensure my workspace fixes didn't break other gets. That's the extent of my testing.