Update AgoraModule.java

android/src/main/java/com/syan/agora/AgoraModule.java

                     WritableMap map = Arguments.createMap();
                     map.putString("type", "onUserOffline");
                     map.putInt("uid", uid);
+                    map.putInt("reason", reason);
                     commonEvent(map);
                 }
             });