Update readme

Author: bokuweb

README.md

@@ -229,6 +229,10 @@ The `style` property is used to set the style of a Pane component.
 
 ## Changelog
 
+### V0.3.1
+
+- Add `isSortable` props. (#34 thanks @lanVS)
+
 ### V0.3.0
 
 - Change sort trigger position (#40 thanks @lanVS)