Add title and preamble

app.py

@@ -26,6 +26,18 @@ def main():
         tokenizer = AutoTokenizer.from_pretrained(selected_model)
         return tokenizer
 
+    st.markdown(
+        """
+        ## TAPAS Tokenization Visualization
+
+        [TAPAS](https://huggingface.co/docs/transformers/model_doc/tapas) models work on Tables.
+        The tool below is to help visualize how the table is tokenized and give total (+ row-wise)
+        token counts.
+
+        Implementation adapted from `tokenizers.tools.EncodingVisualizer`.
+        """
+    )
+
     col1, col2 = st.columns([1, 2])
     with col1:
         selected_model = st.selectbox("Select a tokenizer", models, key=1)