title: ImportError: No module named 'cv2' using jupyter
body: <p>I am trying to import OpenCV into my ipynb using Jupyter. I kept getting :</p>
  
  <blockquote>
    <p>ImportError: No module named 'cv2'</p>
  </blockquote>
  
  <pre><code>import cv2
  import pandas as pd
  import numpy as np
  import matplotlib
  
  from matplotlib import pyplot as plt
  import seaborn as sns
  </code></pre>
  
  <p>Any idea how to import cv2 in jupyter?</p>