add food vision 199 script

food_vision_199_classes.py

@@ -18,9 +18,11 @@ _CITATION = "TODO"
 _DESCRIPTION = "Images of 199 food classes from the Nutrify app."
 
 # Read lines of class_names.txt
-with open("class_names.txt", "r") as f:
+class_names = datasets.DownloadManager().download("class_names.txt")
+with open(class_names, "r") as f:
     _NAMES = f.read().splitlines()
 
+# Create Food199 class
 class Food199(datasets.GeneratorBasedBuilder):
     """Food199 Images dataset"""