README.md in rack_dav-0.3.1 vs README.md in rack_dav-0.4.0

@@ -83,10 +83,10 @@
 
 * __move(dest)__: Move this resource to given destination resource.
 
 * __make\_collection__: Create this resource as collection.
 
-* __lock(token, timeout, scope, type, owner)__: Lock this resource.
+* __lock(locktoken, timeout, lockscope=nil, locktype=nil, owner=nil)__: Lock this resource.
   If scope, type and owner are nil, refresh the given lock.
 
 * __unlock(token)__: Unlock this resource
 
 Note, that it is generally possible, that a resource object is