Update cometd.d.ts

transformed cometD module to interface. 

usage:
```
var cometd: CometD;
```

added some methods: *clearListeners, clearSubscriptions, handshake, disconnect*

added definition for jQuery: `$.cometd` returns CometD type

cometd/cometd.d.ts

@@ -5,26 +5,6 @@
 
 declare module CometD {
 
-    var onListenerException: (exception: any, subscriptionHandle: any, isListener: boolean, message: string) => void;
-
-    function init(options: ConfigurationOptions): void;
-    
-    function configure(config: ConfigurationOptions): void;
-
-    function addListener(channel: string, listener: (message: any) => void): void;
-    function removeListener(listener: (message: any) => void): void;
-
-    function clearListeners(): void;
-
-    function clearSubscriptions(): void;
-    
-    function handshake(handshake_params: any): void;
-
-    function publish(channel: string, message: any): void;
-
-    
-    function disconnect(): void;
-    
     interface ConfigurationOptions {
         url: string;
         logLevel?: string;
@@ -37,4 +17,35 @@ declare module CometD {
         appendMessageTypeToURL?: boolean;
         autoBatch?: boolean;
     }
+
+}
+
+interface CometD {
+
+    onListenerException: (exception: any, subscriptionHandle: any, isListener: boolean, message: string) => void;
+
+    init(options: CometD.ConfigurationOptions): void;
+
+    configure(config: CometD.ConfigurationOptions): void;
+
+    addListener(channel: string, listener: (message: any) => void): void;
+    removeListener(listener: (message: any) => void): void;
+
+    clearListeners(): void;
+
+    clearSubscriptions(): void;
+
+    handshake(handshake_params: any): void;
+
+    publish(channel: string, message: any): void;
+
+
+    disconnect(): void;
+    
+}
+
+
+
+interface JQueryStatic {
+    cometd: CometD;
 }