Removed references to scipy since sphinx and numpydoc are now up to date on pypi. 
Removed references to scipy since sphinx and numpydoc are now up to date on
pypi. 

Alwnikrotikz/pysal,AlanZatarain/pysal,Alwnikrotikz/pysal,Alwnikrotikz/pysal,tectronics/pysal,tectronics/pysal,AlanZatarain/pysal,AlanZatarain/pysal,tectronics/pysal