Pyramid-heroku

-----

* Fix return value in migrate.shell. `subprocess.check_output` changed in
python 3.6 and is now returning byte and not str.
[karantan]

-----

* Provided default values for migrate.py - https://github.com/teamniteo/pyramid_heroku/issues/2
[enkidulan]

-----

* The request.client_addr cannot be set directly, so we need to go around.
[zupo]

-----

* Fix tween paths.
[zupo]

---

* Initial release.
[dz0ny, zupo]