Fix vigil only working in dev mode.

- Be careful in future with pip dev mode.  Unfortunately its
  possible for code to work in dev mode but not when deployed.
  For example in this case, when files aren't listed in setup.py
  package_data.

setup.py

@@ -18,7 +18,7 @@ setup(name="vigil",
       author="Andrew Hamilton",
       license="Artistic 2.0",
       packages=["vigil", "vigil.urwid"],
-      package_data={"vigil": ["LS_COLORS.sh"]},
+      package_data={"vigil": ["LS_COLORS.sh", "tools.yaml"]},
       entry_points={"console_scripts":
                     ["vigil=vigil.__main__:entry_point",
                      "vigil-worker=vigil.worker:main"]})