master: fix readme

Author: litcoderr

README.md

@@ -52,13 +52,13 @@ Following is a recommended usage.
     config.parse()
     ```
 
-    2-1. Parse command line arguments.
+    2-1. Parse command line arguments. example)
 
     ```
-    python -m your_module --use_gpu False
+    python -m your_module --use_gpu False --model_config.output_dim 256
     ```
 
-    2-2. Import from pre-exported configuration json file. Use ```--load_json``` option.
+    2-2. Import from pre-exported configuration json file. Use ```--load_json``` option. example)
 
     ```
     python -m your_module --load_json PATH_TO_JSON_FILE

importify/interface.py

@@ -69,18 +69,22 @@ def export_json(self, path: str, ignore_error=True) -> bool:
         return succeed
 
     # Import Methods
-    def import_dict(self, data: Dict[str, Any]):
+    def import_dict(self, data: Dict[str, Any], ignore_error: bool = True):
         """Import arguments from dictionary
 
         Args:
             data: dictionary that consists child argument recursively.
+            ignore_error: ignore error if True.
         """
         for key, value in data.items():
             if hasattr(self, key):
                 if isinstance(getattr(self, key), Serializable):
                     setattr(self, key, getattr(self, key).import_dict(value))
                 else:
                     setattr(self, key, value)
+            else:
+                if not ignore_error:
+                    raise KeyError("[!] Invalid key during import")
         return self
 
     @classmethod