First of all, suite '_plotools' is now split into three separate suites
'_plotools', '_proj_shell', '_proj_group', following the changes made
into the structure of the code.
Second, the two tests in 'test_projshells.py' have been fixed to conform
to the recent modifications in the code and input files.
The files from the original vasp-interface repository are reshuffled in
accord with the directory structure of dft_tools. Some of the directories,
such as 'test' (unit tests for the interface), 'examples' (simple examples for
the development purposes) are temporarily placed into 'python/vasp' directory
to avoid confusion with integral tests and examples of dft_tools.
