typo

README.md

@@ -69,7 +69,7 @@ The results shoule be in the 'html' directory.
 
 * Navigation key-binding in JavaScript (can be in other templating system)
 * make sure the same id does not exists in different pages
-* makes sure index is not an id in the multiSlider case
+* make sure index is not an id in the multiSlider case
 * make sure keywords is not an id
 * make sure examples is not an id
 * other conflicts?