Zack

We can print out examples for schemas which include inheritance and overrides in the form:
```
"allOf": [
    {
      "$ref": "/schemata/event"
    },
    {
      "properties": {
        "type": {
          "$ref": "/schemata/placement#/definitions/type"
        },
        "data": {
          "$ref": "/schemata/placement#/definitions/data"
        }

      },
      "required": [
        "type"
      ]
    }
  ]
```

The output looks like:
```json
{
  "ts": "2012-01-01T12:00:00Z",
  "type": "placement",
  "pub_data": "{'level':12,'id':'abcdefg123456'}",
  "data": {
    "tag": "main_menu"
  }
}
```