Added shore gpl warning in the readme

Followup of #524 to make the licensing issues clearer.
That was there before this PR. I agree - looks weird.

On Sun, Dec 28, 2014 at 11:14 AM, Eleftherios Garyfallidis <
notifications@github.com> wrote:

> In README.rst
> <https://github.com/nipy/dipy/pull/525#discussion-diff-22299531>:
>
> > @@ -34,5 +34,9 @@ You can find our sources and single-click downloads:
> >  License
> >  =======
> >
> > -Dipy is licensed under the terms of the BSD license. Some code included with
> > -dipy is also licensed under the BSD license. Please see the LICENSE file in the dipy distribution.
> > +Dipy is licensed under the terms of the BSD license.
> > +Some code included with dipy is also licensed under the BSD license.
>
> No this needs to be changed. Some code ???
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/nipy/dipy/pull/525/files#r22299531>.
>