Instructions for SOLARPI_SECRET env variable missing

[mjpieters]

The old README.rst documenation included the text:

First, set your app's secret key as an environment variable. For example, example add the following to ``.bashrc`` or ``.bash_profile``.

.. code-block:: bash

    export SOLARPI_SECRET = 'something-really-secret'

The newer Markdown version doesn't, and it is causing issues with people trying out this project; they get a traceback that is not necessarily understandable to non-Python, non-Flask developers:

Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    from solarpi.app import create_app
  File "/home/amani/Desktop/new/solarpi/solarpi/app.py", line 10, in <module>
    from solarpi.settings import ProdConfig
  File "/home/amani/Desktop/new/solarpi/solarpi/settings.py", line 7, in <module>
    class Config(object):
  File "/home/amani/Desktop/new/solarpi/solarpi/settings.py", line 9, in Config
    SECRET_KEY = os_env['SOLARPI_SECRET']
  File "/home/amani/Desktop/new/.venv/lib/python2.7/UserDict.py", line 40, in __getitem__
    raise KeyError(key)
KeyError: 'SOLARPI_SECRET'

Please update the new README to include the env var instructions.

[Amanimasila]

Hello have tried to follow the old readme steps

I started by creating a .bash_profile

then added ,
export SOLARPI_SECRET = 'SOLARPI_SECRET'

when I save and try to run the following;

python manage.py db init
python manage.py db migrate
python manage.py db upgrade
python manage.py server

they are giving me the same error

Traceback (most recent call last):
File "manage.py", line 11, in
from solarpi.app import create_app
File "/home/amani/Desktop/new/solarpi/solarpi/app.py", line 10, in
from solarpi.settings import ProdConfig
File "/home/amani/Desktop/new/solarpi/solarpi/settings.py", line 7, in
class Config(object):
File "/home/amani/Desktop/new/solarpi/solarpi/settings.py", line 9, in Config
SECRET_KEY = os_env['SOLARPI_SECRET']
File "/home/amani/Desktop/new/.venv/lib/python2.7/UserDict.py", line 40, in getitem
raise KeyError(key)
KeyError: 'SOLARPI_SECRET'

[globalepub]

when running the server
$ (.venv) python manage.py server

-- python2
NameError : name 'ModuleNotFoundError' is not defined

-- python3
ImportError: No module named 'flask.ext'