Update README

Author: mostafa

README.md

@@ -103,3 +103,10 @@ curl 'http://localhost:8501/v1/models/sqli_model/versions/3:predict' -X POST -H
 # Or you can use the following one-liner:
 curl -s 'http://localhost:8501/v1/models/sqli_model/versions/3:predict' -X POST -H 'Accept: application/json' -H 'Content-Type: application/json' --data-raw '{"inputs":['$(curl -s 'http://localhost:8000/tokenize_and_sequence' -X POST -H 'Accept: application/json' -H 'Content-Type: application/json' --data-raw '{"query":"select * from users where id = 1 or 1=1"}' | jq -c .tokens)']}' | jq
 ```
+
+#### Model metadata
+
+```bash
+# Get the model metadata
+curl -X GET 'http://localhost:8501/v1/models/sqli_model/versions/3/metadata'
+```