crop default options changes (#1487)

Co-authored-by: Harsh Khandeparkar <34770591+HarshKhandeparkar@users.noreply.github.com>
Co-authored-by: Jeffrey Warren <jeff@unterbahn.com>

examples/lib/insertPreview.js

@@ -41,8 +41,8 @@ function updatePreviews(src, DomNode) {
     'crop': {
       'x': 0,
       'y': 0,
-      'w': '(50%)',
-      'h': '(50%)',
+      'w': '50%',
+      'h': '50%',
       'noUI': true
     }
   };