Add bakerydemo local settings example file and fix setup script accordingly (#54) (#55)

* Add example file for bakerydemo/bakerydemo/settings/local.py (#54)

* Copy example file to bakerydemo/bakerydemo/settings/local.py in setup.sh script

bakerydemo-settings-local.py.example

@@ -0,0 +1,6 @@
+from bakerydemo.settings.dev import *  # noqa
+import dj_database_url
+
+# Override settings here
+db_from_env = dj_database_url.config(conn_max_age=500)
+DATABASES['default'].update(db_from_env)

setup.sh

@@ -37,7 +37,7 @@ fi
 # Set up bakerydemo to use the Postgres database in the sister container
 if [ ! -f bakerydemo/bakerydemo/settings/local.py ]; then
     echo "Creating local settings file"
-    cp bakerydemo/bakerydemo/settings/local.py.docker-compose-example bakerydemo/bakerydemo/settings/local.py
+    cp bakerydemo-settings-local.py.example bakerydemo/bakerydemo/settings/local.py
 fi
 
 # Create a blank .env file in bakerydemo to keep its settings files from complaining