text: Title: how using the .txt files instead of xml?
  Body: i was study by darknet, but now i try the darkflow.
  in darknet, my custom image dataset have annotation file format is txt.
  it is composed: "object-class" "x" "y" "width" "height"
  
  so my question is 
  how can i using this txt file?
  if i can't this, how can i convert this file to the .xml files?
  
  many thanks,
  
  
  
  