moved some files, updated tutorial

nbody6_quick_guide.md

python_scripts_for_nbody6/ascii_readout_nbody6pp_example.py

python_scripts_for_nbody6/extra_functions.py

python_scripts_for_nbody6/hdf5_readout_nbody6pp_example.py

...s_for_nbody6/old_or_unfinished_scripts/config_defaults.py

...ody6/old_or_unfinished_scripts/nbody6_config_generator.py

...ts_for_nbody6/old_or_unfinished_scripts/readout_script.py

...or_unfinished_scripts/readout_script_nbody6pp_binaries.py

...cripts_for_nbody6/old_or_unfinished_scripts/test_input.py

python_scripts_for_nbody6/out.hdf5