- possible now to use `pip install .` instead of `python setup.py install` : add it in documentation and README.rst
- add new feature to write exodusII format :
    global setting keyword : `glb.do_save_exII`
- manage output_path based on input file name by default and split step phases into :
    - add `glb._basename and `glb._output_step_dir`
        os.makedirs(str_folder + os.path.sep + "S_0_im_preparation")
        os.makedirs(str_folder + os.path.sep + "S_0_fix_connectivity")
        os.makedirs(str_folder + os.path.sep + "S_1_init_surf")
        os.makedirs(str_folder + os.path.sep + "S_2_surf_preremesh")
        os.makedirs(str_folder + os.path.sep + "S_3_surf_remesh")
        os.makedirs(str_folder + os.path.sep + "S_4_vol_mesh")
- remove `add_boundary` keyword for `writemeshvtk` from (from S2M.io.vtkwriter)


git-svn-id: https://subversion.renater.fr/authscm/gueguenm/svn/s2m/branches/py3@356 44b05df8-2783-0410-96ae-90a9475e9bf2