message: create_sine_model.ipynb: update to Python 3 & tensorflow 2
diff: "toc_visible": true
  },
  "kernelspec": {
  - "name": "python2",
  - "display_name": "Python 2"
  + "name": "python3",
  + "display_name": "Python 3"
  }
  },
  "cells": [
  },
  "source": [
  "# TensorFlow is an open source machine learning library\n",
  - "# Note: The following line is temporary to use v2\n",
  - "!pip install tensorflow==2.0.0-beta0\n",
  "import tensorflow as tf\n",
  "# Numpy is a math library\n",
  "import numpy as np\n",
  