message: internal changes
  Use NLClassifier in movie reiview ref app, split the app into two, one with interpreter, another with NLClassifier
  build with gradle:
  Using support lib:
  ./gradlew installInterpreterDebug
  Using task API lib:
  ./gradlew installTaskApiDebug
diff: "colab_type": "text"
  },
  "source": [
  - "The TensorFlow Lite model file and label file can be used in the [text classification](https://github.com/tensorflow/examples/tree/master/lite/examples/text_classification) reference app by adding `model.tflite`, `text_label.txt` and `vocab.txt` to the [assets directory](https://github.com/tensorflow/examples/tree/master/lite/examples/text_classification/android/app/src/main/assets). Do not forget to also change the filenames in the [code](https://github.com/tensorflow/examples/blob/master/lite/examples/text_classification/android/app/src/main/java/org/tensorflow/lite/examples/textclassification/TextClassificationClient.java#L43)."
  + "The TensorFlow Lite model file can be used in the [text classification](https://github.com/tensorflow/examples/tree/master/lite/examples/text_classification) reference app by adding `model.tflite` to the [assets directory](https://github.com/tensorflow/examples/tree/master/lite/examples/text_classification/android/lib_task_api/src/main/assets). Do not forget to also change the filenames in the [code](https://github.com/tensorflow/examples/blob/master/lite/examples/text_classification/android/lib_task_api/src/main/java/org/tensorflow/lite/examples/textclassification/TextClassificationClient.java#L31)."
  ]
  },
  {
  