assign member role on User creation (done in UsersController; could also be done as before_create callback on User model)
remove role from being mass-assignable (a forged form or POST request could result in someone setting themselves as admin)
fix callback to update_bookmark (rank should now be set, ordering should work)
set initial rank on Bookmark creation (nil rank was messing up ordering)
fix route and create method for favorites#index
Merge pull request #2 from gadtfly/master

Fix issues with ranking, setting user membership on creation, and displaying favorites