message: Add documentation of the home_url messenger_profile api
diff: @@ -400,6 +400,23 @@ Remove all domains
  Get a list of the whitelisted domains.
  +### controller.api.messenger_profile.home_url()
  +| Argument | Description
  +|--- |---
  +| payload | A home_url object with the properties `url`, `webview_height_ratio`, `in_test`
  +
  +View the facebook documentation for details of the [home_url](https://developers.facebook.com/docs/messenger-platform/messenger-profile/home-url) payload object.
  +
  +*NB.* The value of the `url` property must be present in the domain_whitelist array
  +
  +### controller.api.messenger_profile.delete_home_url()
  +
  +Remove the home_url setting
  +
  +### controller.api.messenger_profile.get_home_url()
  +
  +Get the home_url
  +
  #### Using the The Messenger Profile API
  ```js
  @@ -451,6 +468,17 @@ controller.api.messenger_profile.get_domain_whitelist(function (err, data) {
  console.log('****** Whitelisted domains :', data);
  });
  +controller.api.messenger_profile.home_url({
  + "url": 'https://mydomain.com',
  + "webview_height_ratio": 'tall',
  + "in_test": false
  +})
  +
  +controller.api.messenger_profile.get_home_url(function (err, data) {
  + console.log('****** Home url :', data);
  +});
  +
  +controller.api.messenger_profile.delete_home_url();
  controller.hears(['hello'],'facebook_postback', function(bot, message) {
  //...
  