Made vigil into a package with a setup.py file.

setup.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+
+# Copyright (C) 2017 Andrew Hamilton. All rights reserved.
+# Licensed under the Artistic License 2.0.
+
+
+try:
+    from setuptools import setup
+except ImportError:
+    from distutils.core import setup
+
+
+setup(name="vigil",
+      version="17.06",
+      description=("Vigil maintains an up-to-date set of reports for every"
+                   " file in a codebase."),
+      url="https://github.com/ahamilton/vigil",
+      author="Andrew Hamilton",
+      license="Artistic 2.0",
+      packages=["vigil"],
+      entry_points={"console_scripts":
+                    ["vigil=vigil.__main__:entry_point",
+                     "vigil-worker=vigil.worker:main"]})