README.md in intercom-2.4.2 vs README.md in intercom-2.4.3

@@ -17,21 +17,23 @@
 
     gem install intercom
 
 Using bundler:
 
-    gem 'intercom', "~> 2.4.2"
+    gem 'intercom', "~> 2.4.3"
 
 ## Basic Usage
 
 ### Configure your access credentials
 
 ```ruby
 Intercom.app_id = "my_app_id"
 Intercom.app_api_key = "my-super-crazy-api-key"
 ```
 
+You can get your `app_id` from the URL when you're logged into Intercom (it's the alphanumeric just after `/apps/`) and your API key from the API keys settings page (under your app settings in Intercom). 
+
 ### Resources
 
 Resources this API supports:
 
     https://api.intercom.io/users
@@ -328,10 +330,10 @@
 Note that models generated from webhook notifications might differ slightly from models directly acquired via the API. If this presents a problem, calling `payload.load` will load the model from the API using the `id` field.
 
 ### Errors
 You do not need to deal with the HTTP response from an API call directly. If there is an unsuccessful response then an error that is a subclass of Intercom:Error will be raised. If desired, you can get at the http_code of an Intercom::Error via its `http_code` method.
 
-The list of different error subclasses are listed below. As they all inherit off Intercom::Error you can choose to rescue Intercom::Error or
+The list of different error subclasses are listed below. As they all inherit off Intercom::IntercomError you can choose to rescue Intercom::IntercomError or
 else rescue the more specific error subclass.
 
 ```ruby
 Intercom::AuthenticationError
 Intercom::ServerError