Introduced a script to assist with upgrading NetBox

upgrade.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+# This script will prepare NetBox to run after the code has been upgraded to
+# its most recent release.
+#
+# Once the script completes, remember to restart the WSGI service (e.g.
+# gunicorn or uWSGI).
+
+# Install any new Python packages
+pip install -r requirements.txt --upgrade
+
+# Apply any database migrations
+./netbox/manage.py migrate
+
+# Collect static files
+./netbox/manage.py collectstatic --noinput