Update documentation

CHANGELOG.rst

@@ -16,8 +16,6 @@ Added
 - Added Elasticsearch7 to search scheme
   `#314 <https://github.com/joke2k/django-environ/pull/314>`_.
 - Added the ability to use ``bytes`` or ``str`` as a default value for ``Env.bytes()``.
-- Added the ability to use env variable pointing to a ``.env`` file
-  `#242 <https://github.com/joke2k/django-environ/pull/242>`_.
 
 Fixed
 +++++

docs/getting-started.rst

@@ -114,7 +114,9 @@ FAQ
    ``django-environ`` will try to get and read ``.env`` file from the project
    root if you haven't specified the path for it when call ``read_env``.
    However, this is not the recommended way. When it is possible always specify
-   the path tho ``.env`` file.
+   the path tho ``.env`` file. Alternatively, you can use a trick with a
+   environment variable pointing to the actual location of .env file.
+   For details see `<tips.html#multiple-env-files>`__.
 
 #. **What (where) is the root part of the project, is it part of the project where are settings?**
 

docs/tips.rst

@@ -122,14 +122,30 @@ Values that being with a ``$`` may be interpolated. Pass ``interpolate=True`` to
 Multiple env files
 ==================
 
-It is possible to have multiple env files and select one using environment variables.
+There is an ability point to the .env file location using an environment
+variable. This feature may be convenient in a production systems with a
+different .env file location.
+
+The following example demonstrates the above:
+
+.. code-block:: shell
+
+   # /etc/environment file contents
+   DEBUG=False
+
+.. code-block:: shell
+
+   # .env file contents
+   DEBUG=True
 
 .. code-block:: python
 
    env = environ.Env()
    env.read_env(env.str('ENV_PATH', '.env'))
 
-Now ``ENV_PATH=other-env ./manage.py runserver`` uses ``other-env`` while ``./manage.py runserver`` uses ``.env``.
+
+Now ``ENV_PATH=/etc/environment ./manage.py runserver`` uses ``/etc/environment``
+while ``./manage.py runserver`` uses ``.env``.
 
 
 Using Path objects when reading env
@@ -155,25 +171,3 @@ It is possible to use of ``pathlib.Path`` objects when reading environment file
    env.read_env(os.path.join(BASE_DIR, '.env'))
    env.read_env(pathlib.Path(str(BASE_DIR)).joinpath('.env'))
    env.read_env(pathlib.Path(str(BASE_DIR)) / '.env')
-
-
-Using an environment variable to point to a .env file
-=====================================================
-
-Since v0.7.0 there is an ability to set an environment variable ``ENV_FILE``
-to point to the .env file location. It can be convenient in a production
-systems with a different .env file location.
-
-The following example demonstrates the above:
-
-.. code-block:: shell
-
-   # .secret file contents
-   SOME_VAR=3.14
-
-.. code-block:: console
-
-   $ export ENV_FILE=$(pwd)/.secret
-   $ python -c 'from environ.environ import Env; Env.read_env(); print(Env.ENVIRON["SOME_VAR"])'
-   3.14
-