Added setup.py to allow automated testing.

Also moved the tests directory to top-level, as they shouldn't be part
of the pillar directory.

setup.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python
+
+"""Setup file for testing, not for packaging/distribution."""
+
+import setuptools
+
+setuptools.setup(
+    name='pillar',
+    version='1.0',
+    packages=setuptools.find_packages('pillar', exclude=['manage']),
+    package_dir={'': 'pillar'},  # tell setuptools packages are under src
+    tests_require=['pytest', 'httpretty'],
+    zip_safe=False,
+)