Broken link in cookbook for read_csv
The second link in the section http://pandas.pydata.org/pandas-docs/stable/cookbook.html#csv
is broken.

I.e. the link [read_csv in action](http://wesmckinney.com/blog/?p=635) is supposed to go to Wes McKinney's blog, but returns a 404 error.  

A cursory look at said blog didn't result in anything jumping out at me as far as what *should* be the correct entry to link to.
