title: pandas.read_csv: how to skip comment lines
body: <p>I think I misunderstand the intention of read_csv. If I have a file 'j' like</p>
  
  <pre><code># notes
  a,b,c
  # more notes
  1,2,3
  </code></pre>
  
  <p>How can I pandas.read_csv this file, skipping any '#' commented lines? I see in the help 'comment' of lines is not supported but it indicates an empty line should be returned. I see an error</p>
  
  <pre><code>df = pandas.read_csv('j', comment='#')
  </code></pre>
  
  <p>CParserError: Error tokenizing data. C error: Expected 1 fields in line 2, saw 3</p>
  
  <p>I'm currently on </p>
  
  <pre><code>In [15]: pandas.__version__
  Out[15]: '0.12.0rc1'
  </code></pre>
  
  <p>On version'0.12.0-199-g4c8ad82':</p>
  
  <pre><code>In [43]: df = pandas.read_csv('j', comment='#', header=None)
  </code></pre>
  
  <p>CParserError: Error tokenizing data. C error: Expected 1 fields in line 2, saw 3</p>