Add some GCE+Docker+CoreOS notes.

Change-Id: I67d37b3aaf08e22315bda6aae9e7c7d48c67dba5

misc/gce/cloud-config.yaml

@@ -0,0 +1,19 @@
+#cloud-config
+
+coreos:
+  units:
+    - name: hello-docker.service
+      command: start
+      content: |
+        [Unit]
+        Description=Camlistore
+        After=docker.service
+        Requires=docker.service
+        
+        [Service]
+        ExecStart=/usr/bin/docker run -p 80:80 camlistore/hello
+        RestartSec=500ms
+        Restart=always
+        
+        [Install]
+        WantedBy=multi-user.target

misc/gce/notes.txt

@@ -0,0 +1,8 @@
+gcutil --project=camanaged addinstance \
+       --image=projects/coreos-cloud/global/images/coreos-alpha-394-0-0-v20140801 \
+       --persistent_boot_disk \
+       --zone=us-central1-a --machine_type=n1-standard-1 \   
+       --external_ip_address=107.178.208.16 \
+       --auto_delete_boot_disk \
+       --tags=http-server,https-server \
+       --metadata_from_file=user-data:cloud-config.yaml core1