Update README.md

README.md

 # vk_u2f_gradle
 add gradle plugin into fido u2f applet from [vk_u2f](https://github.com/VivoKey/vk-u2f)
 
+## branch
+```
+v2 -> hkdf_chain
+v1 -> main
+```
+
 ## dependency
 [passport applet](https://git.prlab.io/joshji/PassportAppletWithGradlePlugin)
 
@@ -28,12 +34,6 @@ javacard{
 }
 ```
 
-## branch
-```
-v2 -> hkdf_chain
-v1 -> main
-```
-
 ## applet install
 
 1. open intelliJ by administrator