fix readme

README.md

@@ -52,7 +52,7 @@ python -m auto_git_info your_script.py args1 ... -optn argsn
 or if you want to change the default path:
 
 ```
-python -m auto_git_info log_info=path.json your_script.py args1 ... -optn argsn
+python -m auto_git_info log_path=path.json your_script.py args1 ... -optn argsn
 ```
 *Note that using this method will add `parsed_arguments=False` to the json*