title: Fail to generate Interactive Plot on Jupyter Notebook
body: <p>I am trying to generate Interactive Plot on Jupyter Notebook with Plotly and Cufflinks. But when I run the code, there is an empty space for the figure but no actual plot. Please see the code below.</p>
  <p>Any input would be greatly appreciated. Thanks.</p>
  <pre><code>import pandas as pd
  import numpy as np
  import matplotlib.pyplot as plt
  import cufflinks as cf
  import plotly
  import plotly.offline as plyo
  %matplotlib inline
  plt.ion()
  
  
  a=np.random.standard_normal((250,5)).cumsum(axis=0)
  index=pd.date_range('2019-1-1', freq='B', periods=len(a))
  df=pd.DataFrame(100+5*a, columns=list('abcde'), index=index)
  plyo.iplot(df.iplot(asFigure=True), image='png',filename='ply_01')
  
  </code></pre>