Does not support simple_response type

[ahmet8282]

Hello,

The library doesnt seem to support responses with json

"fulfillment": {
      "speech": "Hi!",
      "messages": [
        {
          "type": "simple_response",
          "platform": "google",
          "textToSpeech": "Hello!"
        },
        {
          "type": 0,
          "speech": "Hi!"
        }
      ]
    }

I think java and android clients have the same problem also. I see similar tickets. Is it possible if you could update it?

Thank you.