title: Get "Adj Close" using pandas DataReader
body: <p>I just switched from pandas.io to pandas_datareader and I'm having difficulties pulling in just Adjusted Close prices. before I could use the following code</p>
  
  <pre><code>pd.io.data.get_data_yahoo(stock, start, end)['Adj Close']
  </code></pre>
  
  <p>now when I try the datareader (imported as web) it does not work. </p>
  
  <pre><code>web.get_data_yahoo(stock, start, end)['Adj Close'] 
  </code></pre>
  
  <p>I've tried to find documentation to see if there is a new argument that the pandas_datareader uses, but I have had no luck. Is there anyway to pull in just Adjusted Close data using the new pandas library? </p>