WIP
ENH: use also NiftiMasker
Minor improvements to MultiPCA
Make confounds work with MultiPCA
Merge branch 'better_pca' of github.com:GaelVaroquaux/nilearn into better_pca
Pull GaelVaroquaux/better_pca into master and fix merge conflicts
Fix default 'confounds' argument in MultiPCA.fit. Also fix typo in
the session_pca call.
Added smoke test for MultiPCA.fit with a 'confounds' argument
Merge pull request #251 from lesteve/GaelVaroquaux-better_pca

Better pca (bis)