Fix the examples

Moves `docker-compose.yaml` to `docker-compose-counter.yaml` and
replaces the default docker-compose.yaml with the example from the
Kompose.io website.

We also rename each file from yml to yaml.

As well as do some slight modifications / formatting to
docker-compose-bundle.dab

examples/docker-voting.yaml

@@ -0,0 +1,27 @@
+version: "2"
+
+services:
+  vote:
+    image: docker/example-voting-app-vote:latest
+    labels:
+     - "com.example.description=Vote"
+    ports:
+      - "5000:80"
+
+  redis:
+    image: redis:alpine
+    ports: ["6379"]
+
+  worker:
+    image: docker/example-voting-app-worker:latest
+
+  db:
+    image: postgres:9.4
+    ports: ["5432"]
+    labels:
+     - "com.example.description=Postgres Database"
+
+  result:
+    image: tmadams333/example-voting-app-result:latest
+    ports:
+      - "5001:80"