Update setup.py
Merge pull request #22 from mkelley/enableconfig

Enable configuration at install and module import.
Update README.rst
Dev version back to -> v2.1-dev
Observing just about running for fixed targets.
len of scalar astropy Time objects raise an exception.  Fixed.
Merge branch 'fix-len-date' into airmass
Fix for missing util.
Merge branch 'fix-len-date' into airmass
Found more len(dates) to fix.
Changed any Quanity.unit I could find to .to(unit).value.
Merge branch 'new-quanitity-behavior' into airmass
Got fixed targets nominally working.
Fixed image.mkflat call to apply_over_axes (bad arg order).
Merge branch 'mkflat-bug' into airmass
oops!  Wasn't bag arg list, but should have called apply_along_axis.
Merge branch 'mkflat-bug' into airmass
Needed to import imstat for image.process.mkflat.
Allow mkflat to accept an initial mask.
observing.MovingTargets are working.