Use `settings.configure()` to create django settings for doc building

+ Allows docs to be built on other machines

GeoffreyApp/docs/source/conf.py

@@ -12,14 +12,13 @@
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
 #
-import os
-import sys
 import django
 
-sys.path.insert(0, os.path.abspath('../../../../Geoffrey/'))
-os.environ['DJANGO_SETTINGS_MODULE'] = 'Geoffrey.settings'
+from django.conf import settings
+settings.configure(INSTALLED_APPS=["GeoffreyApp"])
 django.setup()
 
+
 # -- Project information -----------------------------------------------------
 
 project = 'Geoffrey'