title: How to save results from websocket into pandas?
body: <p>I am streaming data from a websocket into my python application successfully using these lines of code: </p>
  
  <pre><code>wsClient = GDAX.WebsocketClient(url="wss://ws-feed.gdax.com", products="LTC-USD")
  
  wsClient.start()
  </code></pre>
  
  <p>I am having trouble saving the results of <code>wsClient.start()</code>into a pandas dataframe. Not sure why records are not appending with this lines of code, can anyone please help me understand why not : </p>
  
  <pre><code>df1 = pd.DataFrame()
  for i in wsClient.start():
      df1.append(wsClient.start())
  </code></pre>
  
  <p>Thank you in advance. </p>