update: README

README.ZH.md

@@ -186,6 +186,12 @@ $ ./scripts/build.server.sh
 
 ---
 
+## 功能定制
+
+如果需要二次开发/功能定制，请联系[**i@1248.ink**](mailto:i@1248.ink)。
+
+---
+
 ## 项目依赖
 
 Spark使用了许多第三方的开源项目。

README.md

@@ -196,6 +196,12 @@ Finally, run the executable file in that directory.
 
 ---
 
+## Custom Features
+
+If you need to customize some features, please contact me via [**i@1248.ink**](mailto:i@1248.ink).
+
+---
+
 ## Dependencies
 
 Spark contains many third-party open-source projects.