Following changes to GetCurve.py
	- Now reads parameters from a configuration file.
	- Also accepts error frames.
	- Uses lmfit to do all Gaussian fitting
	- Can fit multiple Gaussians simultaneously.
	- Object RA, DEC and JD information now computed from the header.
RotationCurveLib.py completely modified. Lots of new functions added.
Minor aesthetic change or FitRotationCurve.py
Also reduced Spline order and smoothness level since a high order
not really needed for rotation curves.
Rotation curve algorith changed in following ways:
	- Loops until you have done extracting curves for as many lines as you want.
	- Performs filtering based on error bars i.e. large error bar points removed.
	- Offers you to use prior redshift knowledge to deredshift the spectrum for
	  ease of finding the spectral features.