add a 5.0+ exapmle for the scroll api

docs/_examples/index.js

@@ -1,6 +0,0 @@
-module.exports = [
-  {
-    version: '*',
-    examples: {}
-  }
-]

docs/_examples/scroll_5.0+.asciidoc

@@ -0,0 +1,28 @@
+.Collect every title in the index that contains the word "test"
+[source,js]
+---------
+var allTitles = [];
+
+// first we do a search, and specify a scroll timeout
+client.search({
+  index: 'myindex',
+  scroll: '30s', // keep the search results "scrollable" for 30 seconds
+  source: ['title'], // filter the source to only include the title field
+  q: 'title:test'
+}, function getMoreUntilDone(error, response) {
+  // collect the title from each response
+  response.hits.hits.forEach(function (hit) {
+    allTitles.push(hit._source.title);
+  });
+
+  if (response.hits.total > allTitles.length) {
+    // ask elasticsearch for the next set of hits from this search
+    client.scroll({
+      scrollId: response.scroll_id,
+      scroll: '30s'
+    }, getMoreUntilDone);
+  } else {
+    console.log('every "test" title', allTitles);
+  }
+});
+---------