Add 401 and method to add more

Author: KaHa6uc

AndroidAsync/src/com/koushikdutta/async/http/server/AsyncHttpServer.java

@@ -330,6 +330,7 @@ public CompletedCallback getErrorCallback() {
         mCodes.put(302, "Found");
         mCodes.put(304, "Not Modified");
         mCodes.put(400, "Bad Request");
+        mCodes.put(401, "Unauthorized");
         mCodes.put(404, "Not Found");
         mCodes.put(500, "Internal Server Error");
     }
@@ -341,6 +342,10 @@ public static String getResponseCodeDescription(int code) {
         return d;
     }
 
+    public static void addResponseCodeDescription( int code, String description ) {
+        mCodes.put(code, description);
+    }
+
     public static interface WebSocketRequestCallback {
         void onConnected(WebSocket webSocket, AsyncHttpServerRequest request);
     }