check read tokens

inference_resnet.py

@@ -21,7 +21,7 @@ import numpy as np
 if not os.path.exists('model_classification'):
 
     REPO_ID='Serrelab/fossil_classification_models'
-    token = os.environ.get('READ_TOKEN')
+    token = os.getenv('READ_TOKEN')
     print('read token:',token)
     if token is None:
         print("warning! A read token in env variables is needed for authentication.")