1448ef49c8cfec092b563419a2edb96753ee1a67 Example: Update for the fact…

… that the default for `footer` is now to include it`

https://datatables.net/forums/discussion/78352

Sync to source repo @1448ef49c8cfec092b563419a2edb96753ee1a67

datatables.json

@@ -14,5 +14,5 @@
     ],
     "src-repo": "http://github.com/DataTables/Buttons",
     "last-tag": "3.0.0",
-    "last-sync": "e613ade4659e45a688b83d35ccb940bc6ad01eca"
+    "last-sync": "1448ef49c8cfec092b563419a2edb96753ee1a67"
 }