Bump HubStats sample to 0.6.0

Signed-off-by: Alex Ellis <alexellis2@gmail.com>

docker-compose.yml

@@ -65,7 +65,7 @@ services:
 
     # Pass a username as an argument to find how many images user has pushed to Docker Hub.
     hubstats:
-        image: alexellis2/faas-dockerhubstats:latest
+        image: functions/hubstats:latest 
         labels:
             function: "true"
         depends_on:

sample-functions/DockerHubStats/Dockerfile

@@ -8,7 +8,7 @@ COPY . /go/src/github.com/alexellis/faas/sample-functions/DockerHubStats
 
 RUN make
 
-ADD https://github.com/alexellis/faas/releases/download/v0.5-alpha/fwatchdog /usr/bin
+ADD https://github.com/alexellis/faas/releases/download/0.6.0/fwatchdog /usr/bin
 RUN chmod +x /usr/bin/fwatchdog
 
 ENV fprocess "/go/bin/DockerHubStats"