ENH: Added comparison of other classifiers using partial fit methods
Fixed misc style changes suggested by Ogrisel
first draft of scaling_strategies.rst - still wip
improved scaling_strategies.rst, inc. working links
added Federico as author
cosmit pep8/257
added link to user guide + small cosmit
fix re: ogrisel comments
added note on learning rate evolution
readded a paragraph that got lost in the rebase
COSMIT pep8/257
COSMIT typos
COSMIT typos
added links to plots in narrative docs
COSMIT more typos/precisions
Merge pull request #2222 from FedericoV/Out_of_core_example

[MRG] Added comparison of other classifiers using partial fit methods