Fix package so it installs

Author: graingert

setup.cfg

@@ -12,8 +12,7 @@ description-file =
     CHANGES.rst
 home-page = https://github.com/graingert/python-clamd
 requires-dist =
-    setuptools (0.7)
-    six (1.3)
+    six (>=1.3)
 classifier = License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
 
 [files]
@@ -25,7 +24,7 @@ extra_files =
 
 [backwards_compat]
 tests-require =
-    nose (1.3)
+    nose (==1.3)
 
 [test]
 test-suite = nose.collector

setup.py

@@ -2,7 +2,7 @@
 from setuptools import setup
 
 setup(
-    setup_requires=['d2to1>=0.2.9'],
+    setup_requires=['d2to1>=0.2.11'],
     d2to1=True,
 
     # This ensures that the MANIFEST.in is read, but it