Updated gradio UI

Gradio_UI.py

@@ -261,7 +261,12 @@ class GradioUI:
     def launch(self, **kwargs):
         import gradio as gr
 
-        with gr.Blocks(fill_height=True) as demo:
+        with gr.Blocks(fill_height=True, title="NASA agent") as demo:
+            gr.Markdown(
+                """
+                # NASA Agent
+                This agent can provide you with the Astronomy Picture of the Day (APOD).
+                """)
             stored_messages = gr.State([])
             file_uploads_log = gr.State([])
             chatbot = gr.Chatbot(