Update README.md

added /djump to toggle DoubleJump.
(permission jump.DoubleJump)
May collide with fly on survival plugin
If it keeps colliding, rollback to v0.0.2

README.md

@@ -1,13 +1,18 @@
 # DoubleJump
-Most Stable DoubleJump plugin for Nukkit!
+Most Simple DoubleJump plugin for Nukkit!
 # Usage
 Put the .jar file at ~/Nukkit/plugins  
 No more setup for you!
 # Get To Know This Plugin
 You can't do this on Creative. (cuz you are already FLYING)  
 Sometimes, you can doublejump twice.
 # ToDo
-- [ ] Add toggle switch to enable Creative doublejump.  
+- [x] Add toggle switch to enable doublejump. do /djump  
 - [x] Add License  
 - [x] Add getLogger()
 - [x] Add sound effect when double jumping
+# Changelog
+v0.0.1 - first release  
+v0.0.2 - added getLogger(), added sound effect when double jumping.  
+v0.0.3 - added permission (jump.DoubleJump), added /djump to toggle DoubleJump.  
+(May collide with fly on survival plugin / If it keeps colliding, rollback to v0.0.2)