Jordan Pittier ab9a393bdf Fix docs/config.md: the MYAPP_SETTINGS is not exported
If we don"t `export` the variable, it's not available in subcommand:

MYAPP_SETTINGS=/path/to/config_file; python3 -c "import os; os.environ['MYAPP_SETTINGS']"
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python3.5/os.py", line 725, in __getitem__
    raise KeyError(key) from None
KeyError: 'MYAPP_SETTINGS'

The ';' is the culprit here.
2017-01-30 13:46:13 -08:00
..
2017-01-29 16:25:22 -08:00
2017-01-30 13:46:13 -08:00
2017-01-29 16:25:22 -08:00
2017-01-29 12:49:59 -08:00
2017-01-29 12:49:59 -08:00