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
+    );
+};

samples/misc/NodeServicesExamples/Node/resizeImage.js

@@ -1,8 +0,0 @@
-var sharp = require('sharp');
-
-module.exports = function(result, physicalPath, mimeType, maxWidth, maxHeight) {
-    // Invoke the 'sharp' NPM module, and have it pipe the resulting image data back to .NET
-    sharp(physicalPath)
-        .resize(maxWidth || null, maxHeight || null)
-        .pipe(result.stream);
-}