Skip torch.hub GitHub API validation (fixes #10)

detection_utils.py

@@ -34,7 +34,7 @@ def predict_md(im,
     MD_model = torch.hub.load('ultralytics/yolov5', # repo_or_dir
                               'custom', #model
                               megadetector_model, # args for callable model
-                              force_reload=True,
+                              skip_validation=True, # avoid GitHub API rate limit (403)
                               device=md_device,
                               trust_repo=True
                               )