Updated docs on how to add a missing function to the C output
Updated docs on how to add a missing function to the C output

kevinmel2000/excel_to_code,jmptrader/excel_to_code,tamc/excel_to_code,tamc/excel_to_code,kevinmel2000/excel_to_code,jmptrader/excel_to_code,tamc/excel_to_code,dberlin/excel_to_code,dberlin/excel_to_code,tamc/excel_to_code