adding llama2 tokenizer

.gitignore

@@ -1 +1,3 @@
-venv/
+venv/
+__pycache__/
+.python-version

app.py

@@ -8,6 +8,7 @@ hf_tokenizer_list = [
     ("tugstugi/bert-large-mongolian-cased", False),
     ("tugstugi/bert-large-mongolian-uncased", False),
     ("bayartsogt/mongolian-roberta-large", True),
+    ("meta-llama/Llama-2-13b-hf", True),
     ("bigscience/bloom", True),
 ]