change beaker to be an extra #154

--- a/setup.py	Sun Oct 24 12:52:22 2010 -0400
+++ b/setup.py	Thu Nov 11 14:03:44 2010 -0500
@@ -47,9 +47,9 @@
      test_suite = "nose.collector",
      zip_safe=False,
      install_requires=[
-          'Beaker>=1.1',
          'MarkupSafe>=0.9.2',
      ],
+      extras_require = {'beaker':['Beaker>=1.1']},
      entry_points="""
      [python.templating.engines]
      mako = mako.ext.turbogears:TGPlugin