Enable routing via /functions/ endpoint

sample-functions/WebhookStash/Dockerfile

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+FROM golang:1.7.3
+RUN mkdir -p /go/src/app
+COPY handler.go /go/src/app
+WORKDIR /go/src/app
+RUN go get -d -v
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
+
+COPY fwatchdog  /usr/bin/
+
+ENV fprocess="/go/src/app/app"
+CMD ["fwatchdog"]

sample-functions/WebhookStash/README.md

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+WebhookStash
+============
+
+Example serverless function shows how to stash way contents of webhooks called via API gateway.
+
+Each file is saved with the UNIX timestamp in nano seconds plus an extension of .txt
+
+Example:
+
+```
+# curl -X POST -v -d @$HOME/.ssh/id_rsa.pub localhost:8080/function/webhookstash
+```
+
+Then if you find the replica you can check the disk:
+
+```
+# docker exec webhookstash.1.z054csrh70tgk9s5k4bb8uefq find
+```

sample-functions/WebhookStash/handler.go

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+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"strconv"
+	"time"
+)
+
+func main() {
+	input, _ := ioutil.ReadAll(os.Stdin)
+	fmt.Println("Stashing request")
+	now := time.Now()
+	stamp := strconv.FormatInt(now.UnixNano(), 10)
+
+	ioutil.WriteFile(stamp+".txt", input, 0644)
+}