12 factor app: prep for reading environment variables

This change prepares the repo to ignore a .env file instead of the secret.py.
It also eliminates the secret.py.example file, which shouldn't be needed.

.gitignore

@@ -3,4 +3,4 @@ __pycache__
 *.pyo
 *.swp
 *.swa
-secret.py
+.env

secret.py.example

@@ -1,9 +0,0 @@
-TCONNECT_EMAIL = 'email@email.com'
-TCONNECT_PASSWORD = 'password'
-
-PUMP_SERIAL_NUMBER = 11111111
-
-NS_URL = 'https://yournightscouturl/'
-NS_SECRET = 'apisecret'
-
-TIMEZONE_NAME = 'America/New_York'