title: Plotly chart not showing in Jupyter notebook
body: <p>I have been trying to solve this issue for hours. I followed the steps on the <a href="https://plot.ly/python/getting-started/#start-plotting-online" rel="noreferrer">Plotly website</a> and the chart still doesn't show in the notebook.</p>
  
  <p>This is my code for the plot:</p>
  
  <pre><code>colorway = ['#f3cec9', '#e7a4b6', '#cd7eaf', '#a262a9', '#6f4d96', '#3d3b72', '#182844']
  
  data = [
      go.Scatter(
          x = immigration.columns,
          y = immigration.loc[state],
                     name=state) for state in immigration.index]
  
  layout = go.Layout(
      title='Immigration',
      yaxis=dict(title='Immigration %'),
      xaxis=dict(title='Years'),
      colorway=colorway,
      font=dict(family='Courier New, monospace', size=18, color='#7f7f7f')
  )
  
  fig = go.Figure(data=data, layout=layout)
  iplot(fig)
  </code></pre>
  
  <p>And this is everything I have imported into my notebook:</p>
  
  <pre><code>import pandas as pd
  import numpy as np
  import matplotlib.pyplot as plt
  import plotly.plotly as py
  import plotly.graph_objs as go
  from plotly.offline import init_notebook_mode, iplot
  
  init_notebook_mode(connected=True)  
  </code></pre>