README.md in wisper-1.2.1 vs README.md in wisper-1.3.0

@@ -210,10 +210,28 @@
 
 In a Rails app you might want to add your global listeners in an initalizer.
 
 Global listeners are threadsafe.
 
+### Scoping to publisher class
+
+You might want to globally subscribe a listener to publishers with a certain
+class.
+
+```ruby
+Wisper.add_listener(MyListener.new, :scope => :MyPublisher)
+```
+
+This will subscribe the listener to all instances of `MyPublisher` and its
+subclasses.
+
+Alternatively you can also do exactly the same with a publisher class:
+
+```ruby
+MyPublisher.add_listener(MyListener.new)
+```
+
 ## Temporary Global Listeners
 
 You can also globally subscribe listeners for the duration of a block.
 
 ```ruby
@@ -235,9 +253,22 @@
 of events to `:on`.
 
 ```ruby
 post_creater.subscribe(PusherListener.new, :on => :create_post_successful)
 ```
+
+## Prefixing broadcast events
+
+If you would prefer listeners to receive events with a prefix, for example
+`on`, you can do so by passing a string or symbol to `:prefix`.
+
+```ruby
+post_creater.subscribe(PusherListener.new, :prefix => :on)
+```
+
+If `post_creater` where to broadcast the event `post_created` the subscribed
+listeners would receive `on_post_created`. You can also pass `true` which will
+use the default prefix, "on".
 
 ## Mapping an event to a different method
 
 By default the method called on the subscriber is the same as the event
 broadcast. However it can be mapped to a different method using `:with`.