NF: Created dir for ipython notebooks, added notebook to detect partition degeneracies
Update nodal_roles.py
fixed wmdz
Merge branch 'master' of https://github.com/nipy/brainx
Merge pull request #1 from jrcohen02/edits

Edits: Updated modularity.py to convert networkx sparse matrices to dense matrices so can be used with numpy arrays.
Merge branch 'master' of github.com:jrcohen02/brainx
Merge branch 'master' of https://github.com/mb3152/brainx into edits
Merge branch 'master' of https://github.com/mb3152/brainx
Merge branch 'master' into edits