Merge pull request #2 from sgarrettroe/master

added c2
New case for analyticalResponseFunctionsFun.m

Added case{'1exp1fast'} to model 2D lineshape of CO_2. Contains a delta
function to add a homogeneous component and a Kubo lineshape for
spectral diffusion.
Merge pull request #9 from tbrinzer/master

Changes for CO_2 spectrum fitting