replaced all references to numpy.linalg.svd with scipy's version)
Changed import scipy to import scipy.linalg
Changed import scipy to import scipy.linalg
Merge pull request #159 from sdoering/scipy.linalg.svd

replaced all references to numpy.linalg.svd with scipy's version && replaces numpy.linalgLinAlgError with scipy.linalg.LinAlgError