[Plot] Add sine wave generator example

Add sine wave generator as an example of a domain object which
exposes telemetry, to support transition of the Plot view.
WTD-533.

example/generator/src/SinewaveTelemetryProvider.js

@@ -0,0 +1,53 @@
+/*global define,Promise*/
+
+/**
+ * Module defining SinewaveTelemetryProvider. Created by vwoeltje on 11/12/14.
+ */
+define(
+    ["./SinewaveTelemetry"],
+    function (SinewaveTelemetry) {
+        "use strict";
+
+        /**
+         *
+         * @constructor
+         */
+        function SinewaveTelemetryProvider($q, $timeout) {
+
+            //
+            function matchesSource(request) {
+                return request.source === "generator";
+            }
+
+            // Used internally; this will be repacked by doPackage
+            function generateData(request) {
+                return {
+                    key: request.key,
+                    telemetry: new SinewaveTelemetry(request)
+                };
+            }
+
+            //
+            function doPackage(results) {
+                var packaged = {};
+                results.forEach(function (result) {
+                    packaged[result.key] = result.telemetry;
+                });
+                // Format as expected (sources -> keys -> telemetry)
+                return { generator: packaged };
+            }
+
+            function requestTelemetry(requests) {
+                return $timeout(function () {
+                    return doPackage(requests.filter(matchesSource).map(generateData));
+                }, 0);
+            }
+
+            return {
+                requestTelemetry: requestTelemetry
+            };
+        }
+
+        return SinewaveTelemetryProvider;
+    }
+);