Add image resizing example. Currently used base64 encoded data transfer and the 'jimp' module, neither of which are fast. Will replace these shortly.

samples/misc/NodeServicesExamples/Node/resizeImage.js

@@ -0,0 +1,15 @@
+var Jimp = require('jimp');
+
+module.exports = function(cb, physicalPath, mimeType, maxWidth, maxHeight) {
+    Jimp.read(physicalPath, function (err, loadedImage) {
+        if (err) {
+            cb(err);
+        }
+
+        loadedImage
+            .contain(maxWidth > 0 ? maxWidth : Jimp.AUTO, maxHeight > 0 ? maxHeight : Jimp.AUTO)
+            .getBuffer(mimeType, function(err, buffer) {
+                cb(err, { base64: buffer && buffer.toString('base64') });
+            });
+    });
+}