add image optimization demo.

Author: bradgarropy

examples/node-transformations-effects/image-optimization.js

@@ -0,0 +1,19 @@
+require('dotenv').config()
+const cloudinary = require('cloudinary').v2;
+
+cloudinary.config({cloud_name: process.env.CLOUDINARY_CLOUD_NAME})
+
+// Quality Options
+// ---------------
+// auto
+// best
+// good
+// eco
+// low
+
+const img = cloudinary.url("examples/shoes_kto0zb", {
+    quality: "auto",
+    fetch_format: "auto",
+})
+
+console.log(img)