[#113,docs/tutorial][l]: tutorial-basics written giving introduction to dataset and associated functionality.

* Minor corrections to several other parts of docs.

_includes/tutorial-basics-ex-1.js

@@ -0,0 +1,24 @@
+// (for convenience) assume availability of jquery
+// must have div with class="ex-1"
+var $el = $('.ex-1');
+
+// we will define this function display so we can reuse it below!
+function display(dataset) {
+  // total number of records resulting from latest query
+  $el.append('Total found: ' + dataset.recordCount + '<br />');
+  $el.append('Total returned: ' + dataset.currentRecords.length);
+
+  $el.append('<hr />');
+
+  // dataset.currentRecords is a Backbone Collection of Records that resulted from latest query (hence "current")
+  // Get the first record in the list - it returns an instance of the Record object
+  var record = dataset.currentRecords.at(0);
+
+  // Use the summary helper method which produces proper html
+  // You could also do record.toJSON() to get a hash of the record data
+  $el.append(dataset.recordSummary(record));
+}
+
+// now display our existing dataset ...
+display(dataset);
+