Update README.md

Author: jamesblasco

README.md

@@ -201,7 +201,7 @@ Check in the example project `showAvatarModalBottomSheet` for how to create your
 
 - [X] Support closing by dragging fast on a modal with a scroll view.
 
-- [ ] Improve animation curves when user is not dragging.
+- [X] Improve animation curves when user is not dragging.
 
 - [ ] Allow to set the initial size of the bottom sheet