add log to debug

lib/flutter_boost.dart

@@ -101,6 +101,7 @@ class FlutterBoost {
     properties["url"] = url;
     properties["urlParams"] = urlParams;
     properties["exts"] = exts;
+    print("[JDEBUGX]------boost2.openPage channel call--------");
     return channel.invokeMethod<Map<String,dynamic>>(
         'openPage', properties);
   }