title: reading multiple files contained in a zip file with pandas
body: <p>I have multiple zip files containing different types of txt files. 
  Like below:</p>
  
  <pre><code>zip1 
    - file1.txt
    - file2.txt
    - file3.txt
  </code></pre>
  
  <p>How can I use pandas to read in each of those files without extracting them?</p>
  
  <p>I know if they were 1 file per zip I could use the compression method with read_csv like below:</p>
  
  <pre><code>df = pd.read_csv(textfile.zip, compression='zip') 
  </code></pre>
  
  <p>Any help on how to do this would be great.</p>