- test_utils: refactored code to put utilities required for testing or
  usage in test_utils.py
Moving the tests and examples in the main script of snObject.py to tests
in test_snObject.py. This still contains both SNCosmo and snObject
magnitude calculations, and I will split this to a separate test.
test_data/standard_lc.dat: standard lc data file created by commented
commands in testsnObject.py.
testsnObject.py: generates a light curve for a SN, which was generated
and saved as test_data/standard_lc.dat. This function asserts that the
results must match.
ensure that lc.dat is always written, so that plotlc.py works
Changed organization, so that in both lsst and this case, I can import at the level below sniacatalog'
changed names for test_utils.py to utils_for_tests.py