correct readme

README.rst

@@ -33,8 +33,8 @@ Another step is to add event types to project settings, for example:
 ::
 
   INTERCOM_EVENT_TYPES = (
-    ("example type", _("Example Type")),
-    ("generic type", _("Generic Type"))
+    ("example", _("Example Type")),
+    ("generic", _("Generic Type"))
   )
 
 The last thing is to specify Intercom credentials in project settings:
@@ -55,7 +55,7 @@ desired information, for example:
 
   IntercomEvent.objects.create(
     user=request.user, type="generic", text_content=post.content,
-    content_type=Post, object_id=post.id)
+    content_type=ContentType.objects.get_for_model(Post), object_id=post.id)
 
 Then it will be automatically sent to the Intercom API. Unfortunately Intercom API has a tendency to go down often,
 therefore to make sure all events will be sent, setup a cronjob running the ``resend_intercom_events`` command