changes for 0.3
changes for 0.3

minrk/dockerspawner,jhamrick/dockerspawner,jupyter/dockerspawner,quantopian/dockerspawner,minrk/dockerspawner,jupyter/dockerspawner,quantopian/dockerspawner,Fokko/dockerspawner,Fokko/dockerspawner,jhamrick/dockerspawner