Improved versioning using git tags
Add debug option to main calculation runner
The binary work_queue_worker does not work on all platforms.  Using "which" to locate it instead.  All tests run successfully on leeping.stanford.edu
Updated version in ForceBalance.py to 1.2!
Changed another version number to 1.2
Merge branch 'versioning' of https://github.com/leeping/forcebalance

Conflicts:
	src/__init__.py
Merge branch 'master' of https://github.com/leeping/forcebalance into remote