title: Create DataFrame from multiple Series
body: <p>I have 2 <code>Series</code>, given by:</p>
  
  <pre><code>import pandas as pd
  
  r = pd.Series()
  for i in range(0, 10):
      r = r.set_value(i,i*3)
  r.name = 'rrr'
  
  s = pd.Series()
  for i in range(0, 10):
      s = s.set_value(i,i*5)
  s.name = 'sss'
  </code></pre>
  
  <p>How to I create a <code>DataFrame</code> from them?</p>