Fix dipy rotation and values scaling
Clean new brain extraction example.
Fix histeq comments
Fix bad import following rename
Fix os dependant paths in fetcher.
Fix line break format.
Fix comment format and input var name.
Merge pull request #326 from matthieudumont/fix_brain_extraction_example

Fix brain extraction example
DOC: correct number of seeds in streamline_tools example
Merge pull request #331 from mekman/fix_example

DOC: correct number of seeds in streamline_tools example
Merge pull request #320 from Garyfallidis/nlmeans_opt

Denoising images using non-local means
NF: linear registration for streamlines and bundles of streamlines
NF: added nbundle descriptors
Added init files in test directories
Updated setup.py with the bundle module
Added init file for module
RF: cleanup
RF: remove visualization from tests
more cleanup
RF: refactoring the rigid streamline registration class