pydata/pandas — pull request #7899 by ilam (2014-08-01 19:10:43+00:00)
Title: NotImplementedError messages doc update #7872

I have updated the NonImplementedError messages #7872 in all places applicable.
It includes changes to statements of type
* raise NotImplementedError
* raise NotImplementedError()
Comment on the changes.

The one place I have doubt and not sure whether to add one or not would be https://github.com/pydata/pandas/blob/master/.coveragerc#L17