DOC: whatsnew.html has typo
I don't understand which rst file builds this page, but the one currently online here:
http://pandas.pydata.org/pandas-docs/stable/whatsnew.html

as the following typo in it:
- added option display.with_wmp_style 

the key `with_wmp_style` is not known. It sounds a bit like this should be

`display.mpl_style` which works fine for me like this:

`pd.set_option('display.mpl_style','default')`
