Tweak some things to get Tailbonen working on its own.

tailbone/app.py

@@ -153,6 +153,8 @@ def main(global_config, **settings):
     """
     This function returns a Pyramid WSGI application.
     """
+    settings.setdefault('mako.directories', ['tailbone:templates'])
     rattail_config = make_rattail_config(settings)
     pyramid_config = make_pyramid_config(settings)
+    pyramid_config.include('tailbone')
     return pyramid_config.make_wsgi_app()