message: backwards compatible between threadSetting and mossengerProfile
diff: @@ -414,9 +414,7 @@ function Facebookbot(configuration) {
  };
  - facebook_botkit.api = {
  - 'thread_settings': facebook_botkit.api.messenger_profile,
  - 'messenger_profile': {
  + var messenger_profile_api = {
  greeting: function(greeting) {
  var message = {
  'setting_type': 'greeting',
  @@ -518,7 +516,11 @@ function Facebookbot(configuration) {
  }
  });
  }
  - }
  + };
  +
  + facebook_botkit.api = {
  + 'messenger_profile': messenger_profile_api,
  + 'thread_settings': messenger_profile_api
  };
  // Verifies the SHA1 signature of the raw request payload before bodyParser parses it
  