puts pythonxy back in

Author: katyhuff

INSTALL

@@ -17,7 +17,9 @@ Python distribution `(Anaconda)
 distribution `(Canopy) <https://www.enthought.com/products/canopy/>`_  
 are both excellent choices that "just work" out of the box for any 
 platform.  Both of these packages include matplotlib and
-*lots* of other useful tools.  matplotlib is also packaged for almost
+*lots* of other useful tools.
+Another excellent alternative for Windows users is `Python (x, y)
+<http://www.pythonxy.com/>`_ . matplotlib is also packaged for almost
 every major Linux distribution. So if you are on Linux, your package
 manager will probably provide matplotlib prebuilt.