Fixed to work with fit_lc in a similar way:
Fixed to work with fit_lc in a similar way:

- Instantiation now defaults to samples and weights = None
if not supplied. The covariance calculation must be through
linear calculations.
	modified:   analyzeSN/analyzelcFits.py

rbiswas4/sncosmo_lc_analysis,lisaleemcb/sncosmo_lc_analysis