message: Put a default content type in fb quick replies
diff: @@ -2,6 +2,7 @@ var Botkit = require(__dirname + '/CoreBot.js');
  var request = require('request');
  var crypto = require('crypto');
  var bodyParser = require('body-parser');
  +var clone = require('clone');
  function Facebookbot(configuration) {
  @@ -55,7 +56,13 @@ function Facebookbot(configuration) {
  platform_message.message.sticker_id = message.sticker_id;
  }
  - if (message.quick_replies) platform_message.message.quick_replies = message.quick_replies;
  + if (message.quick_replies) {
  + platform_message.message.quick_replies = message.quick_replies.map(function(item) {
  + var quick_reply = clone(item);
  + if (!item.content_type) quick_reply.content_type = 'text';
  + return quick_reply;
  + });
  + }
  } else {
  platform_message.sender_action = message.sender_action;
  