A trivial guestbook app

Functions for GET and POST endpoints. A redis.yaml to deploy redis on
kubernetes.  And a deploy.sh to deploy the fission functions with
routes.

examples/python/guestbook/deploy.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+set -e
+
+kubectl create -f redis.yaml
+
+if [ -z "$FISSION_URL" ]
+then
+    echo "Need $FISSION_URL set to a fission controller address"
+    exit 1
+fi
+
+fission env create --name python --image fission/python-env
+fission function create --name guestbook-get --env python --code get.py --url /guestbook --method GET
+fission function create --name guestbook-add --env python --code add.py --url /guestbook --method POST