RF - update csdeconv to use SphHarmFit class to reduce code duplication.
Added a space on the line break.
Started working on ellipsoid visualization
Added tensor function for tensor visualization as ellipsoids
Removed show from test
Added option to visualize the odfs with the color_fa color
NF: peaks_from_models now can also output spherical harmonic coefficients
Add run_module_suite in odf.py
Added suggestions from github
Rebased on top of nipy-dipy-master
Update to a more recent version of `six.py`.

From here: https://bitbucket.org/gutworth/six/overview
Merge pull request #213 from arokem/fix_six

RF - Update to a more recent version of `six.py`.
ENH: Non-linear least squares tensor fitting.
ENH: First-pass implementation of RESTORE.
RF + TST: RESTORE.
RF: Simplified the tensor decomposition.
DOC: Small comment change.
TST: Make the tests more runnable.
RF: Silence some runtime warnings.
RF: Replace fmin with leastsq.