TST additional tests for preprocessing.Binarizer
Merge pull request #2067 from jnothman/test_binarizer

TST additional tests for preprocessing.Binarizer
COSMIT add underscore prefixes where forgotten in cross_validation
Fix wrong argument name in RFECV docstring
Merge pull request #2071 from djv/patch-1

Fix wrong argument name in RFECV docstring
Merge branch 'master' of git://github.com/scikit-learn/scikit-learn into out-of-core-examples
more structured iteration using islice + wrappers; renamed chunk for minibatch as the latter seems more common in hte literature