title: Pandas: Writing data frame to Excel (.xls) file issue
body: <p>I am trying to write the data frame to excel and also making the cell width (20) and trying to hide grid lines. So far I did like :</p>
  
  <pre><code>writer = ExcelWriter('output.xlsx')
  
  df.to_excel(writer,'Sheet1')
  writer.save()
  
  
  worksheet = writer.sheets['Sheet1']
  
  # Trying to set column width as 18
  worksheet.set_column(0,3,18)   
  #the data frame has 2 columns and a row  - in xls it converts them to 3 columns
  
  worksheet.hide_gridlines()
  # I tried with option 2 - but this hides only the column grids, I mean the row(in data fram now became column A - it still has grid lines) 
  
  writer.save()
  </code></pre>
  
  <p>My Data frame looks like:</p>
  
  <pre><code>                              Col1      Col2
    Time 
     2011-01-01 01:00:00        4345        0.444
  
     2011-01-01 11:00:00        443         7.4
  </code></pre>
  
  <p>Is this wrong way? I don't see the changes in the output file. What I am doing wrong here? Is there a way to name my row header? </p>
  
  <p>Here. When try to hide the grid line. The row(in data frame['Time]) now column A in excel still has the grid. </p>