REFAC: change CV to CRSlicer
DOC: readme
DOC: remove not useful example
REFAC: rebuild CRSplitter
ENH: slitting export_csv in two different functions
ENH: updating export_resultset_csv and export_leaves_csv
ENH: improving memory testing on the cluster
Merge branch 'master' of https://github.com/neurospin/pylearn-epac into memory_testing