Add test_pep8 -- has failures
Satisfy PEP8
 - Really add test_pep8.py this time
 - PEP8 cleanup
 - When adding bscr root to PYTHONPATH, work from an absolute path name
Implementing 'bscr version'
 - Added bscr_version() and test for it
 - Added git_root()
 - Updated bscr_root() to do the right thing without an argument
 - Updated dev.README
 - Updated setup.py to deploy .bscr_version