Add doc for building

README.md

@@ -11,6 +11,13 @@ YGO Agent is a project to create a Yu-Gi-Oh! AI using deep learning (LLMs, RL).
 
 ## Building
 
+### prerequisites
+- gcc 10,0 or later (or clang 11.0 or later)
+- [xmake](https://xmake.io/#/getting_started)
+- PyTorch 2.0 or later with cuda support
+
+After installing the prerequisites, you can build the project with the following commands:
+
 ```bash
 git clone https://github.com/sbl1996/ygo-agent.git
 cd ygo-agent