Update README.md

README.md

@@ -26,3 +26,26 @@ socket.on("connect") {data in
 }
 socket.connect()
 ```
+
+Binary support is not guaranteed to work. All recieved data is encoded in base64 strings.
+```
+// Sending binary
+socket.emit("testObject", args: [
+        "data": "Hello World".dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)!,
+        "test": true])
+        
+// Recieving data
+socket.on("dataTest") {data in
+    var err:NSError?
+    var stringData = data as String
+    var data = stringData.dataUsingEncoding(NSUTF8StringEncoding)
+    var json = NSJSONSerialization.JSONObjectWithData(data!, 
+        options: NSJSONReadingOptions.AllowFragments, error: &err) as NSDictionary
+    var bufData = NSData(base64EncodedString: (json["buf"] as String),
+        options: NSDataBase64DecodingOptions.allZeros)
+    if let dataAsString = NSString(data: bufData!, encoding: NSUTF8StringEncoding) {
+        println(dataAsString)
+    }
+}
+
+```