README: rename Adaptor to Adapter

Readme.md

@@ -92,9 +92,9 @@ io.on('connection', function(){ // … });
 
   If no arguments are supplied this method returns the current value.
 
-### Server#adaptor(v:Adaptor):Server
+### Server#adapter(v:Adapter):Server
 
-  Sets the adaptor `v`. Defaults to an instance of the `Adaptor` that
+  Sets the adapter `v`. Defaults to an instance of the `Adapter` that
   ships with socket.io which is memory based (see below).
 
   If no arguments are supplied this method returns the current value.
@@ -166,7 +166,7 @@ io.on('connection', function(){ // … });
   A `Socket` is the fundamental class for interacting with browser
   clients.
 
-### Socket#rooms:Array
+### Socket#joined:Array
 
   A list of strings identifying the rooms this socket is in.
 
@@ -176,14 +176,14 @@ io.on('connection', function(){ // … });
   connection. A `Client` can be associated with many multiplexed `Socket`
   that belong to different `Namespace`s.
 
-### Adaptor
+### Adapter
 
-  The `Adaptor` is in charge of keeping track of what rooms each socket
+  The `Adapter` is in charge of keeping track of what rooms each socket
   is connected to, and passing messages to them.
 
-  By default the `Adaptor` is memory based. In order to pass messages
-  across multiple processes, make sure to use an appropriate adaptor
-  (configurable through `Server#adaptor`).
+  By default the `Adapter` is memory based. In order to pass messages
+  across multiple processes, make sure to use an appropriate adapter.
+  (configurable through `Server#adapter`).
 
 ## License