Auto Reply Support

Help Scout now has the ability to send an Auto Reply for conversations created via the API.

In order to add support for this feature, I had to change the way the optional params are sent to Help Scout when creating a conversation via the API.

From the Help Scout devs:

>The autoReply attribute needs to be a request parameter, not passed in the body of the request (the JSON). That applies to the reload parameter as well. So, the URL should be:
>
>POST https://api.helpscout.net/v1/conversations.json?autoReply=true&reload=true