added llama 2 pipe

app.py

@@ -1,7 +1,12 @@
 import gradio as gr
+from transformers import pipeline
 
-def greet(name):
-    return "Hello " + name + "!!"
+# Use a pipeline as a high-level helper
+pipe = pipeline("text-generation", model="meta-llama/Llama-2-7b-chat-hf")
 
-iface = gr.Interface(fn=greet, inputs="text", outputs="text")
+def llama_chat(name):
+    resp = pipe(name)
+    return resp
+
+iface = gr.Interface(fn=llama_chat, inputs="text", outputs="text")
 iface.launch()