SAVGOL implementation, work in progress
Merge branch 'master' into lapack_svd
cleaned up and fixed the shortcut for SVD, with specs
fixes and updates to savgol filter example
SAV-GOL filtering method development
working on patching up the output to match
column shifted version is shown to be broken
Merge branch 'master' into savgol

Conflicts:
	lib/nmatrix/lapack.rb
	spec/lapack_spec.rb
fixes to lapack code