Giving due credit (last minute ChangeLog item).

Author: mblondel

doc/whats_new.rst

@@ -111,6 +111,7 @@ Changelog
    - Distance helper functions :func:`metrics.pairwise.pairwise_distances`
      and :func:`metrics.pairwise.pairwise_kernels` by Robert Layton
 
+   - :class:`Mini-Batch K-Means <cluster.MiniBatchKMeans>` by Nelle Varoquaux and Peter Prettenhofer.
 
    - :ref:`mldata` utilities by Pietro Berkes.