A way to auto-adjust column widths when using pd.ExcelWriter?
Reference to this StackOverflow question:
http://stackoverflow.com/questions/17326973/is-there-a-way-to-auto-adjust-excel-column-widths-with-pandas-excelwriter

It would be a nice feature to have the columns in the excel file auto-adjusted to the length of the longest entry in that column. 
