Replace image resizing sample with chartist sample

samples/misc/NodeServicesExamples/Node/renderChart.js

@@ -0,0 +1,8 @@
+var generate = require('node-chartist');
+
+module.exports = function (callback, type, options, data) {
+    generate(type, options, data).then(
+        result => callback(null, result), // Success case
+        error => callback(error)          // Error case
+    );
+};