readme: Pre Träna CodeBert med JavaFx + Java FXML + JavaFx relaterat logik kod (dvs. Model, Controller för olika JavaFx kod). 
  
  Blev ungefär 130 k kod exemplar
  
  
  
  
  ````
  ***** train metrics *****
    epoch                    =        3.0
    train_loss               =     0.4556
    train_runtime            = 5:57:43.71
    train_samples            =     131945
    train_samples_per_second =     18.442
    train_steps_per_second   =      2.305
    
    
    ***** eval metrics *****
    epoch                   =        3.0
    eval_loss               =     0.2984
    eval_runtime            = 0:01:59.72
    eval_samples            =       6944
    eval_samples_per_second =     57.999
    eval_steps_per_second   =       7.25
    perplexity              =     1.3477
    
    ````