Add more info about app

app.py

@@ -42,6 +42,9 @@ def decode(ids):
 def main():
     st.set_page_config(page_title="Devanagari Tokenizer", layout="wide")
     st.title("Devanagari Text Tokenizer and Decoder")
+    st.text(
+        "This app tokenizes and decodes Devanagari text only using Byte Pair Encoding (BPE)."
+    )
     st.markdown(
         """<style>
             .stTextArea label {