Added missing add method to python export
Added missing add method to python export

git-svn-id: 9672dfcc0771119c6516a56fa23977343927474e@3145 fa922fa7-2fde-0310-acd8-f43f465a7996

joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue,joaander/hoomd-blue