drops pylab reference

Author: katyhuff

INSTALL

@@ -17,7 +17,7 @@ Python distribution `(Anaconda)
 is an excellent choice that "just works" out of the box. 
 The Enthought distribution `(Canopy)
 <https://www.enthought.com/products/canopy/>`_  is also a good a good choice
-for any platform.  Both of these packages include matplotlib and pylab, and
+for any platform.  Both of these packages include matplotlib and
 *lots* of other useful tools.  matplotlib is also packaged for almost
 every major Linux distribution.  So if you are on Linux, your package
 manager will probably provide matplotlib prebuilt.