docs: update readMe file.

FGadvancer · web-flow · commit 5d6771b61118 · 2025-06-16T15:31:11.000+08:00
diff --git a/README.md b/README.md
@@ -1 +1,5 @@
-# keygen-for-trial
+# keygen-for-trial
+
+**keygen-for-trial** is a tool for generating trial keys for deploying commercial product test versions on your own server. It helps developers and testers quickly generate valid keys for product trials with flexible configurations.
+
+## Usage
