Language -> Build

Readme.md

-Python Language Pack
+Python Build Pack
 ====================
-The Python Language Pack (PLP) is a language pack for running Python and Django
+The Python Build Pack (PBP) is a build pack for running Python and Django
 apps on Heroku.
 
-If `requirements.txt` is present, the PLP considers the directory a Python app
+If `requirements.txt` is present, the PBP considers the directory a Python app
 with packages to install via pip.
 
-Furthermore, if `${PROJECT}/settings.py` is present, the PLP considers the
+Furthermore, if `${PROJECT}/settings.py` is present, the PBP considers the
 directory a Python/Django app, and patches `settings.py` to parse the Heroku
 DATABASE_URL config vars. It then sets default process types to use the Django
 web server.
 
-External Language Pack
+External Build Pack
 ----------------------
 Cutting-edge development is taking place in this repo. To use this on Heroku,
-set a `LANGUAGE_PACK_URL` config var with a fully authenticated URL to this repo:
+set a `BUILDPACK_URL` config var with a fully authenticated URL to this repo:
 
-    $ heroku config:add LANGUAGE_PACK_URL=https://nzoschke:XXXXXXX@github.com/heroku/language-pack-python.git
+    $ heroku config:add BUILDPACK_URL=https://nzoschke:XXXXXXX@github.com/heroku/heroku-buildpack-python.git
 
-On next push, slug-compiler will use this LP instead of the built-in one.
+On next push, slug-compiler will use this BP instead of the built-in one.
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