Add github code and paper url

app.py

@@ -100,7 +100,8 @@ def build_ui(g2p, model, vocoder, to_mel, mel_stats):
         return (to_mel.sample_rate, wav.squeeze().numpy()), fig
 
     with gr.Blocks() as demo:
-        gr.Markdown("# PromptTTS++")
+        gr.Markdown("# PromptTTS++: Controlling Speaker Identity in Prompt-Based Text-to-Speech Using Natural Language Descriptions")
+        gr.Markdown("### You can check the [paper](https://arxiv.org/abs/2309.08140) and [code](https://github.com/line/promptttspp).")
         gr.Markdown("### NOTE: Please do not enter personal information.")
         content_prompt = gr.Textbox(
             content_placeholder, lines=3, label="Content prompt"