Stop using find_packages(); it was including tests.

setup.py

@@ -25,7 +25,7 @@
 
 import sys
 import os.path
-from setuptools import setup, find_packages
+from setuptools import setup
 
 
 here = os.path.abspath(os.path.dirname(__file__))
@@ -176,7 +176,7 @@ setup(
     test_suite = 'nose.collector',
 
     namespace_packages = ['rattail'],
-    packages = find_packages(),
+    packages = ['rattail'],
     include_package_data = True,
     zip_safe = False,