README.md in notify_user-0.1.4 vs README.md in notify_user-0.3.1

@@ -139,9 +139,25 @@
 	<p style="text-align: center;">
 		<%= unsubscribe_link(@notification, "Unsubscribe") %>
 	</p>
 <% end %>
 ```
+##Unsubscribing/Subscribing to a specific group_id or resource
+Unsubscribing from a specific `group_id` eg. specific resource.
+`put /notify_user/notifications/unsubscribe_from_object.json`
+expects
+```
+subscription: {type: "NotificationType", group_id: 1, unsubscribe: true|false}
+```
+returns
+`response_code 201`
+
+##Upgrade v0.1.4 to v0.2
+Run aggregate_interval generator which generates the migrations to add a sent_time field to notifications
+```
+rails generate notify_user:aggr_interval
+rake db:migrate
+```
 
 ##Upgrading to JSON params data type
 Run json_update generator which generates the migrations to change the params datatype to json as well as convert the current data to json
 ```
 rails generate notify_user:json_update