[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/SinewaveTelemetry.js

@@ -0,0 +1,42 @@
+/*global define,Promise*/
+
+/**
+ * Module defining SinewaveTelemetry. Created by vwoeltje on 11/12/14.
+ */
+define(
+    [],
+    function () {
+        "use strict";
+
+        var firstObservedTime = Date.now();
+
+        /**
+         *
+         * @constructor
+         */
+        function SinewaveTelemetry(request) {
+            var latestObservedTime = Date.now(),
+                count = Math.floor((latestObservedTime - firstObservedTime) / 1000),
+                period = request.period || 30,
+                generatorData = {};
+
+            generatorData.getPointCount = function () {
+                return count;
+            };
+
+            generatorData.getDomainValue = function (i, domain) {
+                return i * 1000 +
+                        (domain !== 'delta' ? firstObservedTime : 0);
+            };
+
+            generatorData.getRangeValue = function (i, range) {
+                range = range || "sin";
+                return Math[range](i * Math.PI * 2 / period);
+            };
+
+            return generatorData;
+        }
+
+        return SinewaveTelemetry;
+    }
+);